At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM F3111. Standard specification for heavy hex structural bolt/nut/washer assemblies, alloy steel, heat treated, 200 ksi minimum tensile strength. A wrench-tightened heavy-hex counterpart to the F3043 twist-off assembly, providing 200 ksi structural bolting above the A490 (150 ksi) level.
Standard specification for heavy hex structural bolt/nut/washer assemblies, alloy steel, heat treated, 200 ksi minimum tensile strength. A wrench-tightened heavy-hex counterpart to the F3043 twist-off assembly, providing 200 ksi structural bolting above the A490 (150 ksi) level.
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| Grade 200 assembly (bolt) | alloy steel Q&T | Heavy hex structural bolt, 200 ksi min tensile |
| Companion nut | per assembly | Heavy hex nut matched to bolt |
| Companion washer | per assembly | Hardened structural washer |
Minimum mechanical requirements per ASTM F3111.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| Bolt 1/2-1 in dia | 200 ksi (1380 MPa) | n/a (tension/proof based) | n/a | 35-40 HRC approx |
| Bolt >1-1.5 in dia | 200 ksi (1380 MPa) | n/a | n/a | 35-40 HRC approx |
| Nut (matched) | proof load matched to 200 ksi bolt | n/a | n/a | hardened |
| Washer | n/a | n/a | n/a | 38-45 HRC hardened |
| Grade | Key Composition, % |
|---|---|
| Alloy steel | Medium-carbon alloy steel (Cr-Mo or boron type), quenched and tempered to 200 ksi min tensile |
Heavy-hex 200 ksi analog above ASTM F3125 Grade A490 (150 ksi); installed per RCSC/AISC structural bolting
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 F3111 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 heavy hex structural bolt/nut/washer assemblies, alloy steel, heat treated, 200 ksi minimum tensile strength. A wrench-tightened heavy-hex counterpart to the F3043 twist-off assembly, providing 200 ksi structural bolting above the A490 (150 ksi) level.
Ananka Fasteners supplies Grade 200 assembly (bolt), Companion nut, Companion washer to ASTM F3111. 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 F3111 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 F3111 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 F3111 requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM F3111 and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
