At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM F3125/F3125M. Consolidated standard specification for high-strength heavy hex structural bolts and assemblies, heat-treated, 120 ksi and 150 ksi minimum tensile strength, in inch and metric dimensions (replaces A325, A490, F1852, F2280 and metric equivalents).
Consolidated standard specification for high-strength heavy hex structural bolts and assemblies, heat-treated, 120 ksi and 150 ksi minimum tensile strength, in inch and metric dimensions (replaces A325, A490, F1852, F2280 and metric equivalents).
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| Grade A325 (120 ksi) | Carbon/alloy steel | Heavy hex, Type 1 & Type 3 weathering |
| Grade F1852 (120 ksi) | Twist-off / tension-control | 120 ksi TC bolt |
| Grade 144 (144 ksi) | Intermediate alloy steel | Inch dimension grade |
| Grade A490 (150 ksi) | Alloy/alloy-boron steel | Heavy hex, Type 1 & Type 3 |
| Grade F2280 (150 ksi) | Twist-off / tension-control | 150 ksi TC bolt |
| Grade A325M/8.8 (830 MPa) | Metric carbon/alloy steel | Metric equivalent of A325 |
| Grade A490M/10.9 (1040 MPa) | Metric alloy steel | Metric equivalent of A490 |
Minimum mechanical requirements per ASTM F3125/F3125M.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| A325 / 120 ksi (1/2-1.5 in) | 120 min (830) | 92 (635) | 14 | 25-34 HRC |
| Grade 144 | 144 min (990) | 115 (795) | 14 | – |
| A490 / 150 ksi | 150-173 (1040-1210) | 130 (895) | 14 | 33-38 HRC |
| A325M / 830 MPa (M12-M36) | 120 (830 min) | 92 (660) | 14 | – |
| A490M / 1040 MPa | 150 (1040 min) | 130 (940) | 14 | – |
| Grade | Key Composition, % |
|---|---|
| A325 Type 1 | Medium-carbon or alloy steel, heat treated |
| A325 Type 3 | Weathering (atmospheric-corrosion-resistant) steel |
| A490 Type 1 | Alloy or alloy-boron steel, heat treated |
Consolidates ASTM A325, A325M, A490, A490M, F1852, F2280; metric grades correspond to ISO 898-1 property classes 8.8 (A325M) and 10.9 (A490M).
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 F3125/F3125M 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.
Consolidated standard specification for high-strength heavy hex structural bolts and assemblies, heat-treated, 120 ksi and 150 ksi minimum tensile strength, in inch and metric dimensions (replaces A325, A490, F1852, F2280 and metric equivalents).
Ananka Fasteners supplies Grade A325 (120 ksi), Grade F1852 (120 ksi), Grade 144 (144 ksi), Grade A490 (150 ksi), Grade F2280 (150 ksi), Grade A325M/8.8 (830 MPa), Grade A490M/10.9 (1040 MPa) to ASTM F3125/F3125M. 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 F3125/F3125M 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 F3125/F3125M 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 F3125/F3125M requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM F3125/F3125M and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
