At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM F880/F880M. Standard specification for stainless steel socket set screws (also square head and slotted headless set screws), inch (F880) and metric (F880M) series. Note: these are SET SCREWS, not cap screws – input category ‘Socket/Cap Screws, Stainless Steel Screws’ is broadly correct but the product is set screws. Requirements are hardness- and point/torque-governed. Alloy groups: austenitic (Group 1/2, cold worked) and martensitic (Group 5, heat treated).
Standard specification for stainless steel socket set screws (also square head and slotted headless set screws), inch (F880) and metric (F880M) series. Note: these are SET SCREWS, not cap screws – input category ‘Socket/Cap Screws, Stainless Steel Screws’ is broadly correct but the product is set screws. Requirements are hardness- and point/torque-governed. Alloy groups: austenitic (Group 1/2, cold worked) and martensitic (Group 5, heat treated).
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| Group 1 | 304/305/384 (S30400) | Austenitic, cold worked |
| Group 2 | 316 (S31600) | Austenitic Mo-bearing, cold worked |
| Group 5 | 410/416 (S41000/S41600) | Martensitic, heat treated (higher hardness) |
Minimum mechanical requirements per ASTM F880/F880M.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| Group 1 & 2 (austenitic CW) | n/a (set screw, torque/point governed) | n/a | n/a | approx 25-39 HRC (>=225 HV) |
| Group 5 (martensitic HT) | n/a (set screw) | n/a | n/a | 45-53 HRC (heat treated) |
| Grade | Key Composition, % |
|---|---|
| Group 1 (304) | C 0.08 max, Cr 17-19, Ni 8-11 |
| Group 2 (316) | C 0.08 max, Cr 16-18.5, Ni 10-14, Mo 2-3 |
| Group 5 (410) | C 0.09-0.15, Cr 11.5-13.5 |
Stainless counterpart to ASTM F912 (alloy steel socket set screws); dimensions/points per ASME B18.3. Austenitic grades parallel ISO 3506-3 set-screw classes.
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 F880/F880M 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 stainless steel socket set screws (also square head and slotted headless set screws), inch (F880) and metric (F880M) series. Note: these are SET SCREWS, not cap screws – input category ‘Socket/Cap Screws, Stainless Steel Screws’ is broadly correct but the product is set screws. Requirements are hardness- and point/torque-governed. Alloy groups: austenitic (Group 1/2, cold worked) and martensitic (Group 5, heat treated).
Ananka Fasteners supplies Group 1, Group 2, Group 5 to ASTM F880/F880M. 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 F880/F880M 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 F880/F880M 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 F880/F880M requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM F880/F880M and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
