ASTM F436/F436M — Hardened structural washers
Hardened washers for specified assemblies, with type, dimensions and finish maintained as separate parameters.
- Reference
- ASTM F436/F436M — 24
- 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.
Dimensional data for the request
| Symbol | Required information | Units |
|---|---|---|
| d | Inside diameter | mm or inches, specify |
| D | Outside diameter | mm or inches, specify |
| t | Thickness | 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
Hardened washers: Type and shape
| Identification | Meaning |
|---|---|
| Type 1 | Carbon steel |
| Type 3 | Weathering steel |
| Circular | Circular washer |
| Beveled | Beveled washer for the specified bearing surface |
| Clipped | Clipped profile |
| Extra Thick | Extra-thick circular washer, where specified |
Hardness and dimensions
The HRC values below apply to through-hardened washers. Carburized washers require the standard’s separate surface and core requirements.
| Finish | HRC |
|---|---|
| Plain | 38–45 |
| Hot-dip galvanized | 26–45 |
The circular inch series covers nominal sizes from ¼″ to 4″. Specify inside diameter, outside diameter and thickness for the required shape: do not substitute a generic flat washer. Reference data does not indicate stock availability.
The washer within the assembly
F436 identifies a product specification, not a material or bolt grade. State the required form, diameter, thickness and finish alongside the assembly reference.
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
Industrial and EPC projects, according to the specified application.
Dueemme industries →Have a structural or ASTM specification?
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