ASTM F3111 — Heavy Hex structural assemblies
Very-high-strength bolt, nut and washer assemblies, handled through a specification distinct from F3125.
- Reference
- ASTM F3111 — 23
- 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. | 200 ksi |
| Configuration | Heavy Hex |
| 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.
Specify the complete system
F3111 covers Heavy Hex assemblies with a minimum tensile strength of 200 ksi. Selection requires review of dimensions, installation, tests and documentation.
Send project requirements and conditions
Dueemme assesses sourcing against the project specification, without treating generic components as substitutes for the assembly. Include installation provisions and inspection requirements.
Service environment
F3111 restricts the permitted service environments. It must not be extended automatically to uncovered exterior structures or highly corrosive environments. Provide project conditions for application review.
The intended scope includes normally dry sheltered environments; exterior locations under a roof require the specified structural-system protection. Unroofed exterior exposure, aggressive chemical environments, almost continuous condensation, immersion in water or soil, and cathodically protected systems are excluded.
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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