At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM A276. ASTM A276/A276M covers hot-finished or cold-finished stainless steel bars and shapes (rounds, squares, hexagons, angles). It is a primary bar-stock source for machined fasteners, studs, threaded rod and turned parts. Grades span austenitic (304, 316, 321), martensitic (410, 420, 431) and ferritic (430) stainless. Values are for the annealed condition unless a hardened condition is specified.
ASTM A276/A276M covers hot-finished or cold-finished stainless steel bars and shapes (rounds, squares, hexagons, angles). It is a primary bar-stock source for machined fasteners, studs, threaded rod and turned parts. Grades span austenitic (304, 316, 321), martensitic (410, 420, 431) and ferritic (430) stainless. Values are for the annealed condition unless a hardened condition is specified.
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| 304 | S30400 | 18Cr-8Ni austenitic |
| 304L | S30403 | Low-carbon 304 |
| 316 | S31600 | 16Cr-10Ni-2Mo austenitic |
| 321 | S32100 | Ti-stabilized austenitic |
| 410 | S41000 | 12Cr martensitic, hardenable |
| 430 | S43000 | 16Cr ferritic |
| 431 | S43100 | 16Cr-2Ni martensitic, high strength |
| 17-4PH (630) | S17400 | Precipitation-hardening (per A564) |
Minimum mechanical requirements per ASTM A276.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| 304 (annealed) | 75 (515) | 30 (205) | 40 | 201 HBW / 92 HRB |
| 304L (annealed) | 70 (485) | 25 (170) | 40 | 201 HBW / 92 HRB |
| 316 (annealed) | 75 (515) | 30 (205) | 40 | 217 HBW / 95 HRB |
| 321 (annealed) | 75 (515) | 30 (205) | 40 | 217 HBW / 95 HRB |
| 410 (annealed) | 65 (450) | 30 (205) | 20 | 217 HBW / 96 HRB |
| 430 (annealed) | 65 (450) | 30 (205) | 22 | 183 HBW / 89 HRB |
| 431 (annealed) | – | – | – | 285 HBW max |
| 17-4PH (H1075) | 145 (1000) | 125 (860) | 12 | ≈311 HBW / 33 HRC |
| Grade | Key Composition, % |
|---|---|
| 304 | C 0.07 max, Cr 17.5-19.5, Ni 8-11 |
| 316 | C 0.08 max, Cr 16-18, Ni 10-14, Mo 2-3 |
| 410 | C 0.08-0.15, Cr 11.5-13.5, Ni 0.75 max |
| 430 | C 0.12 max, Cr 16-18, Ni 0.75 max |
| 17-4PH | C 0.07 max, Cr 15-17.5, Ni 3-5, Cu 3-5, Nb 0.15-0.45 |
Grade equivalents to A240 plate and A182 forgings (304, 316, 321). 17-4PH bar is more commonly ordered to ASTM A564; martensitic 410/431 correspond to A193 B6. A276 bar is the machining stock for A193/A320 studs, bolts and specialty fasteners.
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 A276 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.
ASTM A276/A276M covers hot-finished or cold-finished stainless steel bars and shapes (rounds, squares, hexagons, angles). It is a primary bar-stock source for machined fasteners, studs, threaded rod and turned parts. Grades span austenitic (304, 316, 321), martensitic (410, 420, 431) and ferritic (430) stainless. Values are for the annealed condition unless a hardened condition is specified.
Ananka Fasteners supplies 304, 304L, 316, 321, 410, 430, 431, 17-4PH (630) to ASTM A276. 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 A276 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 A276 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 A276 requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM A276 and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
