At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of ISO 7380-1/-2. CLARIFIED: input listed this under ‘Hex/Heavy Hex Bolts’ and ‘Hexalobular/Flanged Button Screws’; it is really the button-head socket screw family. ISO 7380-1 = hexagon socket button head screws; ISO 7380-2 = hexagon socket button head screws WITH FLANGE (the flange spreads bearing load). Table below shows the flanged variant (ISO 7380-2), sizes M3 to M12.
CLARIFIED: input listed this under ‘Hex/Heavy Hex Bolts’ and ‘Hexalobular/Flanged Button Screws’; it is really the button-head socket screw family. ISO 7380-1 = hexagon socket button head screws; ISO 7380-2 = hexagon socket button head screws WITH FLANGE (the flange spreads bearing load). Table below shows the flanged variant (ISO 7380-2), sizes M3 to M12.
Hexagon socket button head screw with flange (ISO 7380-2)
Key dimensions for common sizes are listed below.
| Size | Head diameter dk (mm) | Flange diameter dc (mm) | Head height k (mm) | Hex socket s (mm) |
|---|---|---|---|---|
| M3 | 5.7 | 7.2 | 1.65 | 2.0 |
| M4 | 7.6 | 9.4 | 2.2 | 2.5 |
| M5 | 9.5 | 11.8 | 2.75 | 3.0 |
| M6 | 10.5 | 13.2 | 3.3 | 4.0 |
| M8 | 14.0 | 17.6 | 4.4 | 5.0 |
| M10 | 17.5 | 21.8 | 5.5 | 6.0 |
| M12 | 21.0 | 26.0 | 6.6 | 8.0 |
6g (external, ISO 965)
[‘ISO 7380-1 (button head, no flange)’, ‘ISO 4762 (socket head cap screw)’, ‘DIN 7380-2’]
For the official ISO standards catalogue, see the ISO standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We produce ISO 7380-1/-2 fasteners in carbon and alloy steel, austenitic, duplex and super-duplex stainless, and high-nickel, titanium and copper alloys — for structural, flanged, machinery and process applications worldwide.
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.
CLARIFIED: input listed this under ‘Hex/Heavy Hex Bolts’ and ‘Hexalobular/Flanged Button Screws’; it is really the button-head socket screw family. ISO 7380-1 = hexagon socket button head screws; ISO 7380-2 = hexagon socket button head screws WITH FLANGE (the flange spreads bearing load). Table below shows the flanged variant (ISO 7380-2), sizes M3 to M12.
Ananka Fasteners manufactures ISO 7380-1/-2 in sizes from M3–M12. See the Dimensional Table above for the complete size breakdown.
6g (external, ISO 965)
We produce ISO 7380-1/-2 fasteners in carbon and alloy steel, austenitic, duplex and super-duplex stainless, and high-nickel, titanium and copper alloys — for structural, flanged, machinery and process applications worldwide.
Yes. For a quotation, provide the required nominal size, material grade, quantity and any inspection or certificate requirements.
Need a fastener manufactured to ISO 7380-1/-2 for an industrial project? Send the required fastener type, size, material grade, 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: ISO 7380-1/-2 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per ISO 7380-1/-2 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
