At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of ASME B18.2.4.6M. ASME B18.2.4.6M establishes the general and dimensional data for metric heavy hex nuts, which have a larger width across flats and greater thickness than standard hex nuts for high-strength and structural service. It defines width across flats, width across corners and thickness. The standard’s core range is M12 through M36, with extended sizes to M100.
ASME B18.2.4.6M establishes the general and dimensional data for metric heavy hex nuts, which have a larger width across flats and greater thickness than standard hex nuts for high-strength and structural service. It defines width across flats, width across corners and thickness. The standard’s core range is M12 through M36, with extended sizes to M100.
A heavy-series hexagonal nut with enlarged flats and thickness, used with heavy hex bolts and structural/high-strength bolting.
Key dimensions for common sizes are listed below.
| Nominal Size | Width Across Flats max (mm) | Width Across Corners max (mm) | Thickness max (mm) |
|---|---|---|---|
| M12 | 21.00 | 24.25 | 12.3 |
| M14 | 24.00 | 27.71 | 14.3 |
| M16 | 27.00 | 31.18 | 17.1 |
| M20 | 34.00 | 39.26 | 20.7 |
| M22 | 36.00 | 41.57 | 23.6 |
| M24 | 41.00 | 47.34 | 24.2 |
| M27 | 46.00 | 53.12 | 27.5 |
| M30 | 50.00 | 57.74 | 30.7 |
| M36 | 60.00 | 69.28 | 36.6 |
| M42 | 70.00 | 80.83 | 42.0 |
| M48 | 80.00 | 92.38 | 48.0 |
Metric coarse internal threads per ASME B1.13M, tolerance class 6H.
Heavy counterpart to ASME B18.2.4.1M/.2M; used with B18.2.3.6M/.7M heavy hex bolts and now referenced by B18.2.6M structural-fastener standard; comparable to ISO 4033 / DIN 6915.
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 B18.2.4.6M 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 B18.2.4.6M establishes the general and dimensional data for metric heavy hex nuts, which have a larger width across flats and greater thickness than standard hex nuts for high-strength and structural service. It defines width across flats, width across corners and thickness. The standard’s core range is M12 through M36, with extended sizes to M100.
Ananka Fasteners manufactures ASME B18.2.4.6M in sizes from M12–M48. See the Dimensional Table above for the complete size breakdown.
Metric coarse internal threads per ASME B1.13M, tolerance class 6H.
We produce ASME B18.2.4.6M 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 B18.2.4.6M 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 B18.2.4.6M requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per ASME B18.2.4.6M and industry references; provided for reference only — confirm against the current edition of the standard before design use.
