At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of ASME B18.2.3.9M. ASME B18.2.3.9M covers the dimensional requirements for metric series heavy hex flange screws, which combine a heavy hex head with an integral bearing flange. It defines width across flats, flange (bearing) diameter and head height. The standard covers the mid-range sizes M10 through M20.
ASME B18.2.3.9M covers the dimensional requirements for metric series heavy hex flange screws, which combine a heavy hex head with an integral bearing flange. It defines width across flats, flange (bearing) diameter and head height. The standard covers the mid-range sizes M10 through M20.
A heavy hex flange screw with a large hex head and an integral flange beneath it, providing both high wrenching torque and a wide bearing surface without a separate washer.
Key dimensions for common sizes are listed below.
| Nominal Size | Width Across Flats (mm) | Flange Diameter (mm) | Head Height (mm) |
|---|---|---|---|
| M10 | 15.00 | 22.3 | 8.6 |
| M12 | 18.00 | 26.6 | 10.4 |
| M14 | 21.00 | 30.5 | 12.4 |
| M16 | 24.00 | 35.0 | 14.1 |
| M20 | 30.00 | 43.0 | 17.7 |
Metric coarse threads per ASME B1.13M, external thread tolerance class 6g.
Heavy-series counterpart to ASME B18.2.3.4M metric hex flange screws; comparable to DIN 6921 / ISO 4162 flange fasteners.
For the official ASME standards catalogue, see the ASME standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We produce ASME B18.2.3.9M 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.
ASME B18.2.3.9M covers the dimensional requirements for metric series heavy hex flange screws, which combine a heavy hex head with an integral bearing flange. It defines width across flats, flange (bearing) diameter and head height. The standard covers the mid-range sizes M10 through M20.
Ananka Fasteners manufactures ASME B18.2.3.9M in sizes from M10–M20. See the Dimensional Table above for the complete size breakdown.
Metric coarse threads per ASME B1.13M, external thread tolerance class 6g.
We produce ASME B18.2.3.9M 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 ASME B18.2.3.9M 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: ASME B18.2.3.9M requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per ASME B18.2.3.9M and industry references; provided for reference only — confirm against the current edition of the standard before design use.
