At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM A574/A574M. Standard specification for quenched-and-tempered alloy steel socket-head cap screws (and metric variant A574M). Defines the high-strength requirements for standard alloy-steel SHCS.
Standard specification for quenched-and-tempered alloy steel socket-head cap screws (and metric variant A574M). Defines the high-strength requirements for standard alloy-steel SHCS.
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| Alloy steel SHCS (≤ 1/2 in) | – | Q&T alloy steel, smaller diameters |
| Alloy steel SHCS (> 1/2 in) | – | Q&T alloy steel, larger diameters |
| A574M ≤ M5 | – | Metric, class ~12.9 strength |
| A574M M6 and larger | – | Metric, class ~12.9 strength |
Minimum mechanical requirements per ASTM A574/A574M.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| ≤ 1/2 in | 180 ksi (1240 MPa) | 153 ksi (1055 MPa) | 10 (in 5D) | 39-45 HRC (RA 35% min) |
| > 1/2 in | 170 ksi (1170 MPa) | 153 ksi (1055 MPa) | 10 (in 5D) | 37-45 HRC (RA 35% min) |
| A574M ≤ M5 | 1300 MPa (189 ksi) | 1100 MPa (160 ksi) | – | 39-44 HRC |
| A574M M6+ | 1200 MPa (174 ksi) | 1100 MPa (160 ksi) | – | 37-44 HRC |
| Grade | Key Composition, % |
|---|---|
| Alloy steel | Alloy steel per SAE (e.g. 4037/4137/4140/8637-type) with min alloying; C, Mn, Cr, Mo, B combinations meeting hardenability |
ASME SA-574; strength comparable to SAE J429 Grade 8 / ASTM A490 and ISO 898-1 property class 12.9 (metric A574M).
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 A574/A574M 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 quenched-and-tempered alloy steel socket-head cap screws (and metric variant A574M). Defines the high-strength requirements for standard alloy-steel SHCS.
Ananka Fasteners supplies Alloy steel SHCS (≤ 1/2 in), Alloy steel SHCS (> 1/2 in), A574M ≤ M5, A574M M6 and larger to ASTM A574/A574M. 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 A574/A574M 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 A574/A574M 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 A574/A574M requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM A574/A574M and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
