At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM F835/F835M. Standard specification for alloy steel socket button head and flat (and low) countersunk head cap screws, quenched and tempered. Covers inch (F835) and metric (F835M) series. Because head geometry limits full tension testing, requirements are governed primarily by hardness (and torsional/wedge performance), sizes typically No.0 through 3/4 in.
Standard specification for alloy steel socket button head and flat (and low) countersunk head cap screws, quenched and tempered. Covers inch (F835) and metric (F835M) series. Because head geometry limits full tension testing, requirements are governed primarily by hardness (and torsional/wedge performance), sizes typically No.0 through 3/4 in.
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| Alloy steel | Q&T alloy steel | Socket button head and flat/low countersunk head cap screws |
Minimum mechanical requirements per ASTM F835/F835M.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| Alloy steel, all sizes (button/FCHS) | ~155 (1069) equivalent (hardness-based) | n/a (head design limits tension) | n/a | 33-39 HRC (100 ksi core condition) |
| Grade | Key Composition, % |
|---|---|
| Alloy steel | Alloy steel per ASME B18.3; C, Cr, Mo etc. to meet hardenability; quenched & tempered |
Companion to ASTM A574 (alloy socket head cap screws); dimensions per ASME B18.3 / B18.3.1M. Head styles analogous to ISO 7380 (button) and ISO 10642 (countersunk) in alloy grade.
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 F835/F835M 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 alloy steel socket button head and flat (and low) countersunk head cap screws, quenched and tempered. Covers inch (F835) and metric (F835M) series. Because head geometry limits full tension testing, requirements are governed primarily by hardness (and torsional/wedge performance), sizes typically No.0 through 3/4 in.
Ananka Fasteners supplies Alloy steel to ASTM F835/F835M. 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 F835/F835M 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 F835/F835M 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 F835/F835M requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM F835/F835M and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
