At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM F436/F436M. Standard specification for hardened steel washers, inch and metric dimensions, in nominal sizes 1/4 in to 4 in, for use with high-strength structural fasteners (A325, A490, A449, A354, A193, A320, F1554, F3125).
Standard specification for hardened steel washers, inch and metric dimensions, in nominal sizes 1/4 in to 4 in, for use with high-strength structural fasteners (A325, A490, A449, A354, A193, A320, F1554, F3125).
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| Type 1 | Carbon steel | Standard hardened washer |
| Type 3 | Weathering steel | Atmospheric-corrosion-resistant |
Minimum mechanical requirements per ASTM F436/F436M.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| Type 1/3 washer, plain finish | – | – | – | 38-45 HRC |
| Type 1 washer, hot-dip galvanized | – | – | – | 26-45 HRC |
| Grade | Key Composition, % |
|---|---|
| Type 1 | Carbon steel, heat treated to specified hardness |
| Type 3 | Weathering steel matching A588/A709 corrosion resistance |
ASME equivalents used with F3125 (A325/A490) bolting; metric per F436M; comparable in function to ISO 7415/ hardened flat washers.
For the official ASTM International standards catalogue, see the ASTM International standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We supply ASTM F436/F436M fasteners — bolts, screws, studs, nuts and washers as applicable — for energy, petrochemical, marine, structural and general engineering service, in a full range of sizes and finishes.
For technical documentation and quotations, buyers can also review the Ananka Fasteners manufacturing and supply range or contact the team through the fastener enquiry and technical support page.
Ananka Fasteners supplies every lot with full material traceability and third-party testing on request.
Standard specification for hardened steel washers, inch and metric dimensions, in nominal sizes 1/4 in to 4 in, for use with high-strength structural fasteners (A325, A490, A449, A354, A193, A320, F1554, F3125).
Ananka Fasteners supplies Type 1, Type 3 to ASTM F436/F436M. See the Grades / Classes Covered table above for full details of each grade.
Minimum tensile strength, yield strength, elongation and hardness requirements vary by grade — see the Mechanical Properties table above for the complete breakdown.
We supply ASTM F436/F436M fasteners — bolts, screws, studs, nuts and washers as applicable — for energy, petrochemical, marine, structural and general engineering service, in a full range of sizes and finishes.
Yes. For a quotation, provide the required fastener type, grade, nominal size, dimensional standard, quantity and any inspection or certificate requirements.
Need a fastener released to ASTM F436/F436M for an industrial project? Send the required fastener type, grade, size, quantity and certification requirements to Ananka Fasteners. Our team can review the requirement and provide technical and commercial information for standard or custom configurations.
Recommended RFQ details: ASTM F436/F436M requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM F436/F436M and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
