{"id":6610,"date":"2026-04-08T16:57:24","date_gmt":"2026-04-08T14:57:24","guid":{"rendered":"https:\/\/www.dueemmesidol.it\/?page_id=6610"},"modified":"2026-04-09T09:34:48","modified_gmt":"2026-04-09T07:34:48","slug":"astm-fasteners","status":"publish","type":"page","link":"https:\/\/www.dueemmesidol.it\/it\/astm-fasteners\/","title":{"rendered":"ASTM Fasteners Supplier Europe | A193 B7, Structural Bolts"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"6610\" class=\"elementor elementor-6610\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7324021 e-con-full e-flex e-con e-parent\" data-id=\"7324021\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9b4dd5f elementor-widget elementor-widget-heading\" data-id=\"9b4dd5f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">ASTM Fasteners for Industrial and Structural Applications<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-43b9609 elementor-widget elementor-widget-heading\" data-id=\"43b9609\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ASTM-certified fasteners with full material traceability and documentation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bb37476 elementor-widget elementor-widget-heading\" data-id=\"bb37476\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Solutions for oil &amp; gas, structural, energy and heavy industry sectors<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc796e1 elementor-widget elementor-widget-heading\" data-id=\"cc796e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Technical evaluation, sourcing and fast delivery across Europe<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-13369a7 e-con-full e-flex e-con e-parent\" data-id=\"13369a7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1130f7a elementor-widget elementor-widget-text-editor\" data-id=\"1130f7a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\" data-start=\"810\" data-end=\"952\">ASTM fasteners are engineered for high-performance applications where strength, temperature resistance and material traceability are critical.<\/p><p style=\"text-align: center;\" data-start=\"954\" data-end=\"1224\">We supply ASTM-compliant bolts, nuts and stud bolts including A193 B7, A194 and structural grades, supporting industries such as oil &amp; gas, energy and heavy engineering. Our approach combines technical evaluation, controlled sourcing and consistent supply across Europe.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ec75ced e-con-full e-flex e-con e-parent\" data-id=\"ec75ced\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7b7b8ab e-con-full e-flex e-con e-child\" data-id=\"7b7b8ab\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-59c5863 elementor-widget elementor-widget-heading\" data-id=\"59c5863\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What Are ASTM Fasteners<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7cb98d0 elementor-widget elementor-widget-text-editor\" data-id=\"7cb98d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"434\" data-end=\"636\">ASTM fasteners are mechanical components manufactured according to standards defined by ASTM International, covering material composition, mechanical properties, heat treatment and testing requirements.<\/p><p data-start=\"638\" data-end=\"805\">These standards are widely used in industries where performance, safety and traceability are critical, such as oil &amp; gas, power generation and structural applications.<\/p><p data-start=\"807\" data-end=\"1034\">Unlike ISO or DIN standards, ASTM specifications are often based on material grades and performance requirements rather than strength classes, making them particularly suitable for high-stress and high-temperature environments.<\/p><p data-start=\"1089\" data-end=\"1111\">\u00a0<\/p><p data-start=\"1089\" data-end=\"1111\">ASTM standards define:<\/p><p data-start=\"1089\" data-end=\"1111\">\u00a0<\/p><ul data-start=\"1113\" data-end=\"1309\"><li data-section-id=\"hi77b2\" data-start=\"1113\" data-end=\"1173\">mechanical properties (tensile strength, yield strength)<\/li><li data-section-id=\"bl5rqd\" data-start=\"1174\" data-end=\"1211\">chemical composition of materials<\/li><li data-section-id=\"11257t\" data-start=\"1212\" data-end=\"1240\">heat treatment processes<\/li><li data-section-id=\"bflbvr\" data-start=\"1241\" data-end=\"1280\">testing and inspection requirements<\/li><li data-section-id=\"1haia45\" data-start=\"1281\" data-end=\"1309\">marking and traceability<\/li><\/ul><p data-start=\"807\" data-end=\"1034\">\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-31e90cc e-con-full e-flex e-con e-child\" data-id=\"31e90cc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a500a01 elementor-widget elementor-widget-image\" data-id=\"a500a01\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"783\" src=\"https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-bolt-head-marking-a193-b7-e1775661083878-768x783.png\" class=\"attachment-medium_large size-medium_large wp-image-6613\" alt=\"ASTM A193 B7 bolt head marking showing material grade and traceability\" srcset=\"https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-bolt-head-marking-a193-b7-e1775661083878-768x783.png 768w, https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-bolt-head-marking-a193-b7-e1775661083878-294x300.png 294w, https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-bolt-head-marking-a193-b7-e1775661083878-1004x1024.png 1004w, https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-bolt-head-marking-a193-b7-e1775661083878.png 1024w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b8fe33c e-flex e-con-boxed e-con e-parent\" data-id=\"b8fe33c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a9e901e elementor-widget elementor-widget-heading\" data-id=\"a9e901e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Main ASTM Standards for Fasteners<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c3501f6 e-con-full e-flex e-con e-parent\" data-id=\"c3501f6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-cf95738 e-con-full e-flex e-con e-child\" data-id=\"cf95738\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-56c551b elementor-widget elementor-widget-heading\" data-id=\"56c551b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">ASTM A193 \u2013 Alloy and Stainless Steel Bolts<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-48c8352 elementor-widget elementor-widget-text-editor\" data-id=\"48c8352\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">ASTM A193 covers high-strength alloy and stainless steel fasteners designed for high temperature and high-pressure service. The most common grade is B7, widely used in oil &amp; gas, petrochemical and energy applications.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7e4db3f e-con-full e-flex e-con e-child\" data-id=\"7e4db3f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ad2fc5f elementor-widget elementor-widget-heading\" data-id=\"ad2fc5f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">ASTM A194 \u2013 High-Pressure Nuts<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-38a0472 elementor-widget elementor-widget-text-editor\" data-id=\"38a0472\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">ASTM A194 specifies carbon and alloy steel nuts intended for use with ASTM A193 bolts in high-pressure and high-temperature environments.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c3ee2aa e-con-full e-flex e-con e-child\" data-id=\"c3ee2aa\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e360fe5 elementor-widget elementor-widget-heading\" data-id=\"e360fe5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">ASTM A325 and A490 \u2013 Structural Bolts<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ede6de elementor-widget elementor-widget-text-editor\" data-id=\"6ede6de\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\" data-start=\"1001\" data-end=\"1220\">These standards define high-strength structural bolts used in steel constructions and infrastructure projects. They are designed for load-bearing applications requiring controlled tightening and performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a0fa285 e-con-full e-flex e-con e-child\" data-id=\"a0fa285\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6f26ec9 elementor-widget elementor-widget-heading\" data-id=\"6f26ec9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">ASTM F3125 \u2013 Structural Bolting Assemblies<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-77935ce elementor-widget elementor-widget-text-editor\" data-id=\"77935ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\" data-start=\"1001\" data-end=\"1220\">ASTM F3125 consolidates several structural bolt standards, including A325 and A490, into a unified specification for structural bolting assemblies.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9edd6c0 e-con-full e-flex e-con e-parent\" data-id=\"9edd6c0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-6d99a56 e-con-full e-flex e-con e-child\" data-id=\"6d99a56\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b0c12b3 elementor-widget elementor-widget-image\" data-id=\"b0c12b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.dueemmesidol.it\/it\/standard-fasteners\/\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-structural-bolts-industrial-assembly-768x512.png\" class=\"attachment-medium_large size-medium_large wp-image-6614\" alt=\"ASTM structural bolts and stud bolt assemblies in industrial applications\" srcset=\"https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-structural-bolts-industrial-assembly-768x512.png 768w, https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-structural-bolts-industrial-assembly-300x200.png 300w, https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-structural-bolts-industrial-assembly-1024x683.png 1024w, https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-structural-bolts-industrial-assembly.png 1536w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a912a72 e-con-full e-flex e-con e-child\" data-id=\"a912a72\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4a512a7 elementor-widget elementor-widget-heading\" data-id=\"4a512a7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The most commonly supplied ASTM grades include:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-41fd05e elementor-widget elementor-widget-text-editor\" data-id=\"41fd05e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-section-id=\"1iiwt9t\" data-start=\"1600\" data-end=\"1639\">A193 B7 (high strength alloy steel)<\/li><li data-section-id=\"1izeck2\" data-start=\"1640\" data-end=\"1675\">A193 B8 \/ B8M (stainless steel)<\/li><li data-section-id=\"1un7lsa\" data-start=\"1676\" data-end=\"1707\">A194 2H (carbon steel nuts)<\/li><li data-section-id=\"1ygrf2s\" data-start=\"1708\" data-end=\"1742\">A325 \/ A490 (structural bolts)<\/li><\/ul><p data-start=\"534\" data-end=\"651\">\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-24e0297 e-con-full e-flex e-con e-parent\" data-id=\"24e0297\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-53629aa elementor-widget elementor-widget-heading\" data-id=\"53629aa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Materials and Grades<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5dbfad9 elementor-widget elementor-widget-text-editor\" data-id=\"5dbfad9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\" data-start=\"422\" data-end=\"549\">ASTM fasteners are classified by material grades that define their mechanical properties, heat treatment and application range.<\/p><p style=\"text-align: center;\" data-start=\"551\" data-end=\"791\">Each grade is designed for specific operating conditions, including high pressure, elevated or low temperatures and corrosive environments. Correct selection requires evaluation of material performance, compatibility and service conditions.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fd64480 elementor-widget elementor-widget-text-editor\" data-id=\"fd64480\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\" data-start=\"422\" data-end=\"549\">To simplify selection and comparison, we provide a complete technical overview of ASTM, SAE and ISO fastener grades, including mechanical properties, material specifications and marking systems.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4dade8a elementor-widget elementor-widget-text-editor\" data-id=\"4dade8a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\" data-start=\"1110\" data-end=\"1234\"><strong>The table allows quick identification of the correct grade based on strength, material and application.<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1ec9a78 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"1ec9a78\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.dueemmesidol.it\/it\/fastener-materials-guide-steel-stainless-duplex-brass\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">View ASTM, SAE and ISO Grade Comparison<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a2971de elementor-widget elementor-widget-text-editor\" data-id=\"a2971de\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\" data-start=\"1527\" data-end=\"1536\"><strong><em><span style=\"color: #ff9900;\">Includes: mechanical properties, grade markings, material specifications, typical applications<\/span><\/em><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0bad409 e-con-full e-flex e-con e-parent\" data-id=\"0bad409\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-0df4ab5 e-con-full e-flex e-con e-child\" data-id=\"0df4ab5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a26d14d elementor-widget elementor-widget-heading\" data-id=\"a26d14d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ASTM Fastener Grades Overview<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-107412f elementor-widget elementor-widget-text-editor\" data-id=\"107412f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"381\" data-end=\"515\">ASTM standards define fastener grades based on mechanical properties, material composition and intended application. Unlike ISO classes, ASTM grades are often linked to specific industries such as structural steel, pressure vessels and high-temperature applications.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e57676e e-con-full e-flex e-con e-child\" data-id=\"e57676e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5bd04d4 elementor-widget elementor-widget-image\" data-id=\"5bd04d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.dueemmesidol.it\/it\/custom-engineered-fasteners\/\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"534\" src=\"https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-fasteners-structural-bolts-flange-applications-1024x683.png\" class=\"attachment-large size-large wp-image-6643\" alt=\"ASTM fasteners used in structural steel connections and flange assemblies including A325 bolts and A193 B7 stud bolts\" srcset=\"https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-fasteners-structural-bolts-flange-applications-1024x683.png 1024w, https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-fasteners-structural-bolts-flange-applications-300x200.png 300w, https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-fasteners-structural-bolts-flange-applications-768x512.png 768w, https:\/\/www.dueemmesidol.it\/wp-content\/uploads\/2026\/04\/astm-fasteners-structural-bolts-flange-applications.png 1536w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-81d11f3 e-con-full e-flex e-con e-parent\" data-id=\"81d11f3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-2663099 e-con-full e-flex e-con e-child\" data-id=\"2663099\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8ce907a elementor-widget elementor-widget-heading\" data-id=\"8ce907a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ASTM A307<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f12b2fa elementor-widget elementor-widget-text-editor\" data-id=\"f12b2fa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-section-id=\"3v7q84\" data-start=\"1075\" data-end=\"1095\">Low carbon steel<\/li><li data-section-id=\"1ddqc7t\" data-start=\"1096\" data-end=\"1112\">Low strength<\/li><li data-section-id=\"17w43l5\" data-start=\"1113\" data-end=\"1145\">General purpose applications<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f74180f e-con-full e-flex e-con e-child\" data-id=\"f74180f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ce97a88 elementor-widget elementor-widget-heading\" data-id=\"ce97a88\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ASTM A325 \/ A490<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d55ccff elementor-widget elementor-widget-text-editor\" data-id=\"d55ccff\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-section-id=\"1mkfd4j\" data-start=\"1169\" data-end=\"1189\">Structural bolts<\/li><li data-section-id=\"1jyn2cj\" data-start=\"1190\" data-end=\"1207\">High strength<\/li><li data-section-id=\"1uwb231\" data-start=\"1208\" data-end=\"1231\">Steel constructions<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-03e78a4 e-con-full e-flex e-con e-child\" data-id=\"03e78a4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5641317 elementor-widget elementor-widget-heading\" data-id=\"5641317\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ASTM A193 (B7, B8, etc.)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-582da1f elementor-widget elementor-widget-text-editor\" data-id=\"582da1f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-section-id=\"at1sj7\" data-start=\"1263\" data-end=\"1290\">Alloy \/ stainless steel<\/li><li data-section-id=\"t1bwlc\" data-start=\"1291\" data-end=\"1322\">High temperature \/ pressure<\/li><li data-section-id=\"bzd9l5\" data-start=\"1323\" data-end=\"1345\">Oil &amp; gas, flanges<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8ce6cac e-con-full e-flex e-con e-parent\" data-id=\"8ce6cac\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5af16c8 elementor-widget elementor-widget-heading\" data-id=\"5af16c8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">ASTM vs ISO Fastener Grades<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-28f4cad elementor-widget__width-inherit elementor-widget elementor-widget-html\" data-id=\"28f4cad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<style>\r\n.table-astm {\r\n  width: 100%;\r\n  border-collapse: collapse;\r\n  font-size: 14px;\r\n}\r\n.table-astm th {\r\n  text-align: left;\r\n  padding: 12px;\r\n  background-color: #333333;\r\n  color: #ffffff;\r\n}\r\n.table-astm td {\r\n  padding: 12px;\r\n  border-bottom: 1px solid #e0e0e0;\r\n}\r\n.table-astm tr:hover {\r\n  background-color: #f5f5f5;\r\n}\r\n<\/style>\r\n\r\n<table class=\"table-astm\">\r\n  <thead>\r\n    <tr>\r\n      <th>ASTM Grade<\/th>\r\n      <th>ISO Equivalent<\/th>\r\n      <th>Key Difference<\/th>\r\n    <\/tr>\r\n  <\/thead>\r\n  <tbody>\r\n    <tr>\r\n      <td>A307<\/td>\r\n      <td>4.6 \/ 5.6<\/td>\r\n      <td>Lower strength, less controlled mechanical properties<\/td>\r\n    <\/tr>\r\n    <tr>\r\n      <td>A325<\/td>\r\n      <td>8.8<\/td>\r\n      <td>Designed for structural steel connections with defined performance<\/td>\r\n    <\/tr>\r\n    <tr>\r\n      <td>A490<\/td>\r\n      <td>10.9+<\/td>\r\n      <td>Higher strength, not suitable for galvanizing due to hydrogen embrittlement risk<\/td>\r\n    <\/tr>\r\n    <tr>\r\n      <td>A193 B7<\/td>\r\n      <td>\u2014<\/td>\r\n      <td>Alloy steel for high temperature and pressure applications (no direct ISO equivalent)<\/td>\r\n    <\/tr>\r\n  <\/tbody>\r\n<\/table>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-82c4afb e-con-full e-flex e-con e-parent\" data-id=\"82c4afb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d254091 elementor-widget elementor-widget-heading\" data-id=\"d254091\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">When to Use ASTM Fasteners<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a6c3b41 elementor-widget elementor-widget-text-editor\" data-id=\"a6c3b41\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">ASTM fasteners are typically selected when application requirements go beyond standard metric fastening. They are commonly used in structural, high-load and high-temperature environments where defined performance standards are required.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-830bcce e-con-full e-flex e-con e-child\" data-id=\"830bcce\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-96ef556 e-con-full e-flex e-con e-child\" data-id=\"96ef556\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-da0d898 elementor-widget elementor-widget-heading\" data-id=\"da0d898\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Structural steel<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f3fb581 elementor-widget elementor-widget-text-editor\" data-id=\"f3fb581\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-section-id=\"15mrodh\" data-start=\"608\" data-end=\"628\">ASTM A325 \/ A490<\/li><li data-section-id=\"4uwsit\" data-start=\"629\" data-end=\"676\">Steel structures, bridges, heavy frameworks<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f51e6bc e-con-full e-flex e-con e-child\" data-id=\"f51e6bc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-895a512 elementor-widget elementor-widget-heading\" data-id=\"895a512\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Oil &amp; Gas \/ Flanges<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f94dab3 elementor-widget elementor-widget-text-editor\" data-id=\"f94dab3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-section-id=\"1b2907g\" data-start=\"703\" data-end=\"719\">ASTM A193 B7<\/li><li data-section-id=\"kksyts\" data-start=\"720\" data-end=\"766\">Pressure systems, piping, high temperature<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e1768f2 e-con-full e-flex e-con e-child\" data-id=\"e1768f2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b89c8a6 elementor-widget elementor-widget-heading\" data-id=\"b89c8a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">General purpose (US standards)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7baff93 elementor-widget elementor-widget-text-editor\" data-id=\"7baff93\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-section-id=\"3e1lue\" data-start=\"804\" data-end=\"817\">ASTM A307<\/li><li data-section-id=\"1j8gbqb\" data-start=\"818\" data-end=\"876\">Non-critical applications with imperial specifications<\/li><li data-section-id=\"at1sj7\" data-start=\"1263\" data-end=\"1290\">\u00a0<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-631f089 e-con-full e-flex e-con e-parent\" data-id=\"631f089\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2e2a2bc elementor-widget elementor-widget-heading\" data-id=\"2e2a2bc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Common Mistakes in Fastener Selection<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9ce2c7a elementor-widget elementor-widget-text-editor\" data-id=\"9ce2c7a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Assuming ASTM and ISO are interchangeable<\/p><p>\u00a0<\/p><p>Selecting based only on strength class<\/p><p>\u00a0<\/p><p>Ignoring coating limitations (e.g. A490 and galvanizing)<\/p><p>\u00a0<\/p><p>Not considering operating temperature<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>ASTM Fasteners for Industrial and Structural Applications ASTM-certified fasteners with full material traceability and documentation Solutions for oil &amp; gas, structural, energy and heavy industry sectors Technical evaluation, sourcing and fast delivery across Europe ASTM fasteners are engineered for high-performance applications where strength, temperature resistance and material traceability are critical. We supply ASTM-compliant bolts, nuts [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6511,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"footnotes":""},"class_list":["post-6610","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>ASTM Fasteners Supplier Europe | A193 B7, Structural Bolts - Dueemme Sidol<\/title>\n<meta name=\"description\" content=\"ASTM fasteners supplier including A193 B7, A194 nuts and structural bolts. 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