At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of DIN 571. DIN 571 covers hexagon head coach screws (lag screws / lag bolts) with a coarse wood-screw thread and a gimlet point, driven into timber or plastic plugs with a wrench on the hex head. Widely used in construction, joinery and heavy timber fastening. Values below are nominal head dimensions.
DIN 571 covers hexagon head coach screws (lag screws / lag bolts) with a coarse wood-screw thread and a gimlet point, driven into timber or plastic plugs with a wrench on the hex head. Widely used in construction, joinery and heavy timber fastening. Values below are nominal head dimensions.
Hexagon head coach screw / lag screw (wood thread, gimlet point)
Key dimensions for common sizes are listed below.
| Nominal Dia d | Width Across Flats s (mm) | Head Height k (mm) | Across Corners e (mm) |
|---|---|---|---|
| 6 | 10 | 4.0 | 10.89 |
| 8 | 13 | 5.5 | 14.20 |
| 10 | 17 | 7.0 | 18.72 |
| 12 | 19 | 8.0 | 20.88 |
| 16 | 24 | 10.0 | 26.17 |
| 20 | 30 | 13.0 | 32.95 |
Coarse wood-screw thread (no ISO metric machine-thread tolerance)
[‘ASME B18.2.1 / ANSI lag screws’, ‘DIN 96 (round head wood screw)’, ‘EN 14592 (timber fasteners)’]
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 571 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 571 covers hexagon head coach screws (lag screws / lag bolts) with a coarse wood-screw thread and a gimlet point, driven into timber or plastic plugs with a wrench on the hex head. Widely used in construction, joinery and heavy timber fastening. Values below are nominal head dimensions.
Ananka Fasteners manufactures DIN 571 in sizes from 6–20. See the Dimensional Table above for the complete size breakdown.
Coarse wood-screw thread (no ISO metric machine-thread tolerance)
We produce DIN 571 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 571 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 571 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per DIN 571 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
