Vimal Industrial Corporation is a leading supplier and stockist of DIN 7972 self-tapping screws based in Mumbai, India. Manufactured in accordance with DIN 7972 standards, these screws feature a slotted countersunk combined with a thread-forming design that enables direct installation into thin sheet metals, plastics, and light alloys without pre-tapping. The countersunk design provides a broad bearing surface, making them suitable for secure fastening where head pull-through resistance is critical.
We maintain a comprehensive inventory of DIN 7972 screws across sizes, materials, and protective finishes to serve OEMs, electrical panel builders, fabricators, EPC contractors, and MRO teams requiring high-quality fastening solutions with reliable supply and technical documentation.
As India’s electrical, appliance, and fabrication sectors continue to rely on slotted fasteners, demand for DIN 7972 self-tapping screws remains strong. Vimal Industrial Corporation partners with leading manufacturers like APL Fasteners to provide a consistent supply of screws conforming to DIN dimensional tolerances.
All screws are stocked in climate-controlled warehouses, inspected for dimensional accuracy, and available with mill certificates, lot traceability, and third-party inspection reports. With a strategically located Mumbai facility and nationwide logistics network, we ensure same-day dispatch for urgent requirements and scheduled supply contracts.
DIN 7972 screws are widely used in assemblies where a pan head profile and slotted drive are preferred:
Electrical & Control Panels – fastening covers, brackets, and internal components.
Consumer Appliances – housings, frames, and enclosures requiring broader clamping area.
HVAC & Ventilation Systems – sheet-metal ducts and mounting fixtures.
Automotive & Transport Interiors – panels, trims, and interior fittings.
Sheet-Metal Fabrication – kiosks, cabinets, and enclosures.
General Engineering & MRO – repair jobs and retrofits using conventional hand tools.
With years of experience in the industrial fasteners sector, Vimal Industrial Corporation is trusted for its authentic sourcing, technical knowledge, and on-time delivery.
Why clients prefer us:
✅ Authorized APL Fasteners Dealer – genuine supply with complete documentation
✅ Extensive Inventory – wide range of diameters, lengths, and finishes in stock
✅ Custom & Bulk Packing – cartons, kit assortments, or export-ready pallets
✅ Technical Support – guidance on torque, head selection, and substrate suitability
✅ Pan-India Logistics – same-day supply to metro hubs, EPC contractors, and OEMs
✅ Quality Compliance – supplied with ISO reports, inspection certificates, and lot traceability
✅ Customer-First Service – quick response, export facilitation, and dedicated account managers
For OEMs, contractors, and industrial buyers, we make procurement of DIN 7972 self-tapping screws simple, documented, and dependable.
| Thread size | ST2,2 | ST2,9 | ST3,5 | (ST3,9) | ST4,2 | ST4,8 | ST5,5 | ST6,3 | |
|---|---|---|---|---|---|---|---|---|---|
| P | 0,8 | 1,1 | 1,3 | 1,3 | 1,4 | 1,6 | 1,8 | 1,8 | |
| a | max. | 0,8 | 1,1 | 1,3 | 1,3 | 1,4 | 1,6 | 1,8 | 1,8 |
| dk | nominal=max. | 4,3 | 5,5 | 6,8 | 7,5 | 8,1 | 9,5 | 10,8 | 12,4 |
| min. | 4 | 5,2 | 6,44 | 7,14 | 7,74 | 9,14 | 10,37 | 11,97 | |
| k | approx. | 1,3 | 1,7 | 2,1 | 2,3 | 2,5 | 3 | 3,4 | 3,8 |
| n | nominal | 0,6 | 0,8 | 1 | 1 | 1,2 | 1,2 | 1,6 | 1,6 |
| min. | 0,66 | 0,86 | 1,06 | 1,06 | 1,26 | 1,26 | 1,66 | 1,66 | |
| max. | 0,8 | 1 | 1,2 | 1,2 | 1,51 | 1,51 | 1,91 | 1,91 | |
| r | max. | 0,8 | 1,1 | 1,4 | 1,5 | 1,6 | 1,9 | 2,1 | 2,4 |
| t | min. | 0,4 | 0,5 | 0,6 | 0,7 | 0,75 | 0,85 | 1 | 1,2 |
| max. | 0,6 | 0,75 | 0,95 | 1,05 | 1,15 | 1,35 | 1,5 | 1,75 | |
| y | max. Type C | 2 | 2,6 | 3,2 | 3,5 | 3,7 | 4,3 | 5 | 6 |
| max. Type F | 1,6 | 2,1 | 2,5 | 2,7 | 2,8 | 3,2 | 3,6 | 3,6 | |
| l nominal |
Type C | Type F | Approximate mass (7,85 kg/dm³), per 1000 units in kg | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min. | max. | min. | max. | ST2,2 | ST2,9 | ST3,5 | (ST3,9) | ST4,2 | ST4,8 | ST5,5 | ST6,3 | |
| 6,5 | 5,7 | 7,3 | 5,7 | 6,5 | 0,14 | 0,242 | ||||||
| 9,5 | 8,7 | 10,3 | 8,7 | 9,5 | 0,2 | 0,35 | 0,548 | 0,658 | 0,775 | 1,1 | ||
| 13 | 12,2 | 13,8 | 12,2 | 13 | 0,27 | 0,476 | 0,722 | 0,88 | 1,02 | 1,45 | 2,11 | 2,53 |
| 16 | 15,2 | 16,8 | 15,2 | 16 | 0,33 | 0,584 | 0,871 | 1,07 | 1,23 | 1,75 | 2,49 | 3,07 |
| 19 | 18,2 | 19,8 | 18,2 | 19 | 0,692 | 1,02 | 1,26 | 1,44 | 2,05 | 2,87 | 3,61 | |
| 22 | 21,2 | 22,8 | 20,7 | 22 | 1,17 | 1,45 | 1,65 | 2,35 | 3,26 | 4,15 | ||
| 25 | 24,2 | 25,8 | 23,7 | 25 | 1,32 | 1,64 | 1,86 | 2,65 | 3,65 | 4,69 | ||
| 32 | 30,7 | 33,3 | 30,7 | 32 | 2,35 | 3,35 | 4,56 | 5,95 | ||||
| 38 | 36,7 | 39,3 | 36,7 | 38 | 3,95 | 5,34 | 7,03 | |||||
The DIN 7972 is designed to save time. Unlike a standard machine screw nut bolt, you don’t need a pre-threaded hole or a nut. This screw cuts its own threads as you drive it into metal or plastic. The countersunk head ensures that once it’s in, the surface stays perfectly flat and smooth.
Use DIN 7972 when you can’t reach the back of a panel to put a nut. It is the go-to bolt fastener for thin sheet metal, aluminium sections, and plastic enclosures. It’s widely used in bus body building, furniture, and electrical trunking across India.
Just like other countersunk screws, the length of a DIN 7972 is the “Overall Length”. You measure from the very top of the flat head to the sharp tip. Since the head disappears into the material, the total length is what matters for your sheet thickness.
You can, but it’s not ideal. Every time you remove and re-insert a self-tapping bolt fastener, the “female” threads in the material get weaker. If you need a joint that will be opened frequently, a machine screw nut bolt with a permanent insert is a better choice.
Quality matters when you are cutting threads. Vimal Industrial Corporation provides high-precision DIN 7972 stock with sharp, consistent threads and accurate head angles. As a leading Nut Bolt Supplier Mumbai, we provide full certification and same-day dispatch across India, ensuring your assembly line never stops.
