At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM A449. ASTM A449 covers quenched and tempered steel hex cap screws, bolts, and studs of medium strength in sizes 1/4 in. through 3 in., with strength requirements that step down as diameter increases. It provides A325-level strength in configurations and sizes not covered by A325/F3125, including anchor bolts and high-strength studs. Type 1 is carbon or alloy steel; Type 3 is weathering steel.
ASTM A449 covers quenched and tempered steel hex cap screws, bolts, and studs of medium strength in sizes 1/4 in. through 3 in., with strength requirements that step down as diameter increases. It provides A325-level strength in configurations and sizes not covered by A325/F3125, including anchor bolts and high-strength studs. Type 1 is carbon or alloy steel; Type 3 is weathering steel.
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| Type 1 | – | Carbon, carbon boron, alloy or alloy boron steel, quenched & tempered |
| Type 3 | – | Weathering (atmospheric-corrosion-resistant) steel, quenched & tempered |
Minimum mechanical requirements per ASTM A449.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| 1/4-1 in. | 120 (827) min | 92 (634) min | 14 | 25-34 HRC |
| over 1-1 1/2 in. | 105 (724) min | 81 (558) min | 14 | 19-30 HRC |
| over 1 1/2-3 in. | 90 (621) min | 58 (400) min | 14 | – |
| Grade | Key Composition, % |
|---|---|
| Type 1 | Carbon or alloy steel, C 0.30-0.52 typical; P 0.048 max, S 0.058 max |
| Type 3 | Weathering steel with Cu/Cr/Ni for corrosion resistance |
Mechanically comparable to ASTM A325/F3125 for 1/4-1 in.; nuts per A563, washers per F436. Roughly parallels metric property class 8.8 (ISO 898-1) in the smaller size range.
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 A449 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 A449 covers quenched and tempered steel hex cap screws, bolts, and studs of medium strength in sizes 1/4 in. through 3 in., with strength requirements that step down as diameter increases. It provides A325-level strength in configurations and sizes not covered by A325/F3125, including anchor bolts and high-strength studs. Type 1 is carbon or alloy steel; Type 3 is weathering steel.
Ananka Fasteners supplies Type 1, Type 3 to ASTM A449. 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 A449 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 A449 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 A449 requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM A449 and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
