At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of DIN 7971C. Slotted pan head self-tapping (sheet-metal) screws, Form C (cone/gimlet point), aligned with ISO 1481. For fixing into sheet metal, plastics and light alloys. Common range ST2.2-ST6.3.
Slotted pan head self-tapping (sheet-metal) screws, Form C (cone/gimlet point), aligned with ISO 1481. For fixing into sheet metal, plastics and light alloys. Common range ST2.2-ST6.3.
Slotted pan head self-tapping screw
Key dimensions for common sizes are listed below.
| Nominal size | Thread dia d (mm) | Head dia dk max (mm) | Head height k max (mm) | Slot width n (mm) | Slot depth t max (mm) |
|---|---|---|---|---|---|
| ST2.2 | 2.2 | 4.0 | 1.6 | 0.6 | 0.8 |
| ST2.9 | 2.9 | 5.6 | 2.2 | 0.8 | 1.1 |
| ST3.5 | 3.5 | 6.9 | 2.6 | 1.0 | 1.3 |
| ST3.9 | 3.9 | 7.5 | 2.8 | 1.0 | 1.4 |
| ST4.2 | 4.2 | 8.0 | 3.0 | 1.2 | 1.5 |
| ST4.8 | 4.8 | 9.5 | 3.6 | 1.2 | 1.8 |
| ST5.5 | 5.5 | 11.0 | 4.3 | 1.6 | 2.1 |
| ST6.3 | 6.3 | 12.0 | 4.6 | 1.6 | 2.3 |
Self-tapping ST thread per ISO 1478; no ISO 6g class applies
[‘ISO 1481’, ‘DIN 7981’, ‘DIN 7972’]
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 7971C 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.
Slotted pan head self-tapping (sheet-metal) screws, Form C (cone/gimlet point), aligned with ISO 1481. For fixing into sheet metal, plastics and light alloys. Common range ST2.2-ST6.3.
Ananka Fasteners manufactures DIN 7971C in sizes from ST2.2–ST6.3. See the Dimensional Table above for the complete size breakdown.
Self-tapping ST thread per ISO 1478; no ISO 6g class applies
We produce DIN 7971C 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 7971C 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 7971C requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per DIN 7971C and industry references; provided for reference only — confirm against the current edition of the standard before design use.
