At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of DIN 604. DIN 604 covers flat countersunk (90 degree) head bolts with a nib (a small rib/lug under the head that seats in a slot to prevent rotation). Used where a flush head and anti-rotation feature are needed. Values below are nominal countersunk head and nib dimensions.
DIN 604 covers flat countersunk (90 degree) head bolts with a nib (a small rib/lug under the head that seats in a slot to prevent rotation). Used where a flush head and anti-rotation feature are needed. Values below are nominal countersunk head and nib dimensions.
Flat countersunk head bolt with nib
Key dimensions for common sizes are listed below.
| Thread d | Head Dia dk (mm) | Head Height k (mm) | Nib Width (mm) | Nib Height (mm) |
|---|---|---|---|---|
| M6 | 14 | 3.5 | 6 | 3 |
| M8 | 18 | 4.5 | 8 | 4 |
| M10 | 22 | 5.5 | 10 | 4 |
| M12 | 26 | 6.5 | 12 | 5 |
| M16 | 33 | 8.5 | 16 | 6 |
| M20 | 40 | 10.5 | 20 | 7 |
ISO metric coarse thread, tolerance 6g per ISO 965
[‘DIN 608 (countersunk square-neck, short square)’, ‘DIN 605 (countersunk square-neck, long square)’, ‘DIN 603 (mushroom head carriage bolt)’]
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 604 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 604 covers flat countersunk (90 degree) head bolts with a nib (a small rib/lug under the head that seats in a slot to prevent rotation). Used where a flush head and anti-rotation feature are needed. Values below are nominal countersunk head and nib dimensions.
Ananka Fasteners manufactures DIN 604 in sizes from M6–M20. See the Dimensional Table above for the complete size breakdown.
ISO metric coarse thread, tolerance 6g per ISO 965
We produce DIN 604 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 604 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 604 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per DIN 604 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
