ASTM F3148 — Grade 144 structural assemblies
Fixed-spline assemblies: identify the bolt, nut, washer arrangement and installation requirements together.
- Reference
- ASTM F3148 — 17a(2024)
- Configuration
- To specification and drawing
- Dimensions
- Specify units and tolerances
- Supply
- Confirm feasibility and documents
Technical drawing and dimensions to specify
Family selection guide. The drawing only identifies dimensions to specify; it does not identify a certified item, an available size range or a complete assembly. Final geometry and dimensions must match the approved drawing. For special assemblies request the complete system drawing; the hex-bolt schematic does not depict the installation mechanism.
Dimensional data for the request
| Symbol | Required information | Units |
|---|---|---|
| d | Nominal thread and pitch | mm or inches, specify |
| L | Under-head length of the illustrated hex bolt | mm or inches, specify |
| b | Threaded length | mm or inches, specify |
Attach the dimensional standard or drawing, tolerances, quantity and configuration. Mechanical properties and grades appear below; they are not geometric dimensions.
Materials, grades and technical requirements
A complete assembly, not a generic bolt
Identify the entire system: bolt, nut, washers, dimensions, finish, equipment and installation procedure. Components with the same diameter are not automatically interchangeable.
Data required for supply
| Technical field | Requirement |
|---|---|
| Rm min. | 144 ksi |
| Configuration | Fixed-spline |
| Dimensions | Diameter, length and grip range of the selected system |
| Installation | Instructions and checks for the specific assembly |
Do not infer equivalence between standards from tensile strength in ksi alone. Check the standard and proposed system for temperature, exposure and outdoor-use limitations.
Keep F3148 and F3125 distinct
The appearance of 144 ksi in the current F3125 title does not make the specifications interchangeable. Always state the full designation, edition and required system.
Configuration and installation
Provide type, dimensions, specified installation method or equipment, and required tests. Installation instructions or torque values are not derived from the grade alone.
Technical documentation
Dueemme technical sheet
Download technical PDF ↓Assembly and traceability
Lot, markings, component list and conformity documents relevant to the supply.
EN 10204 3.1 · DoP · CoC
State the required documents. Applicability and availability are confirmed during enquiry review.
Testing and coatings
Dimensional reports, mechanical tests, coating reports and ROCAP where applicable to the specification.
Application sectors
Steelwork, structures and infrastructure.
Dueemme industries →Have a structural or ASTM specification?
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