At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of DIN 478. DIN 478 covers square head bolts with a collar (square head set/machine bolts with an integral round collar under the head). Traditionally used on machine frames, jigs and fixtures where a square head allows wrenching against a shoulder. Values below are representative head and collar dimensions.
DIN 478 covers square head bolts with a collar (square head set/machine bolts with an integral round collar under the head). Traditionally used on machine frames, jigs and fixtures where a square head allows wrenching against a shoulder. Values below are representative head and collar dimensions.
Square head bolt with integral round collar
Key dimensions for common sizes are listed below.
| Thread d | Square Width s (mm) | Head Height k (mm) | Collar Dia dc (mm) | Collar Height (mm) |
|---|---|---|---|---|
| M8 | 12 | 8 | 17 | 2 |
| M10 | 17 | 9 | 21 | 2 |
| M12 | 19 | 10 | 24 | 3 |
| M16 | 24 | 13 | 30 | 3 |
| M20 | 30 | 16 | 37 | 4 |
| M24 | 36 | 19 | 44 | 4 |
ISO metric coarse thread, tolerance 6g per ISO 965
[‘DIN 479 (square head bolts with short dog point)’, ‘DIN 480 (square head bolts with collar and dog point)’, ‘DIN 558 / DIN 601 (hex head bolts)’]
For the official DIN standards catalogue, see the DIN standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We produce DIN 478 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.
DIN 478 covers square head bolts with a collar (square head set/machine bolts with an integral round collar under the head). Traditionally used on machine frames, jigs and fixtures where a square head allows wrenching against a shoulder. Values below are representative head and collar dimensions.
Ananka Fasteners manufactures DIN 478 in sizes from M8–M24. See the Dimensional Table above for the complete size breakdown.
ISO metric coarse thread, tolerance 6g per ISO 965
We produce DIN 478 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 DIN 478 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: DIN 478 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per DIN 478 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
