At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM A394. ASTM A394 covers zinc-coated and bare steel bolts used in the construction of electrical transmission towers, substations, and similar steel structures, in nominal thread diameters of 1/2, 5/8, 3/4, 7/8 and 1 in. Requirements are stated as minimum full-size tensile loads rather than a single ksi value; the standard defines low/medium-carbon (Type 0), quenched-and-tempered medium-carbon (Type 1) and weathering steel (Type 3) bolts.
ASTM A394 covers zinc-coated and bare steel bolts used in the construction of electrical transmission towers, substations, and similar steel structures, in nominal thread diameters of 1/2, 5/8, 3/4, 7/8 and 1 in. Requirements are stated as minimum full-size tensile loads rather than a single ksi value; the standard defines low/medium-carbon (Type 0), quenched-and-tempered medium-carbon (Type 1) and weathering steel (Type 3) bolts.
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| Type 0 | – | Low or medium carbon steel, ~74 ksi equivalent tensile |
| Type 1 | – | Medium carbon steel, quenched and tempered, ~120 ksi equivalent |
| Type 3 | – | Weathering (atmospheric-corrosion-resistant) steel, Q&T, ~120 ksi equivalent |
Minimum mechanical requirements per ASTM A394.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| Type 0 (min tensile load, 1/2 in. / 1 in. bolt) | ~74 (510) equiv; 10,500 / 44,850 lbf | Not specified | – | – |
| Type 1 (min tensile load, 1/2 in. / 1 in. bolt) | ~120 (825) equiv; 17,050 / 72,700 lbf | Not specified | – | – |
| Type 3 (min tensile load, 1/2 in. / 1 in. bolt) | ~120 (825) equiv; 17,050 / 72,700 lbf | Not specified | – | – |
| Grade | Key Composition, % |
|---|---|
| Type 0 / 1 | Carbon steel; P 0.04 max, S 0.05 max |
| Type 3 | Weathering steel with Cu, Cr, Ni, Si additions for atmospheric corrosion resistance |
Nuts per ASTM A563 and washers per F436; often used with A563 heavy hex nuts. Type 3 weathering steel parallels ASTM A325 Type 3. Values shown are the standard’s full-size tensile loads converted to approximate stress on the thread stress area.
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 A394 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 A394 covers zinc-coated and bare steel bolts used in the construction of electrical transmission towers, substations, and similar steel structures, in nominal thread diameters of 1/2, 5/8, 3/4, 7/8 and 1 in. Requirements are stated as minimum full-size tensile loads rather than a single ksi value; the standard defines low/medium-carbon (Type 0), quenched-and-tempered medium-carbon (Type 1) and weathering steel (Type 3) bolts.
Ananka Fasteners supplies Type 0, Type 1, Type 3 to ASTM A394. 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 A394 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 A394 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 A394 requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM A394 and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
