DIN THREAD FORMING
SELF-TAPPING & DRILLING SCREWS
High-Performance Screws for Sheet Metal, Steel & Industrial Assemblies
DIN 7500 | DIN 7504 | DIN 7971 | DIN 7981 | DIN 7982 | DIN 7983
Manufacturer & Exporter – Super Industries India
1. Introduction
DIN thread-forming and self-drilling screws are engineered fastening solutions used where pre-tapped threads are not required. These fasteners cut, form, or drill their own threads, reducing assembly time and improving productivity.
At Super Industries India, we manufacture DIN-compliant and custom thread-forming screws for automotive, HVAC, electrical panels, enclosures, steel fabrication, and export markets.
Super Industries
Global Manufacturer of Heavy & Custom Engineered Fasteners & Flanges
2. Difference Between Screw Types
| Type | Function |
|---|---|
| Thread Forming | Forms threads without cutting |
| Self-Tapping | Cuts threads into material |
| Self-Drilling | Drills + taps in one operation |
3. DIN 7500 – Thread Forming Screws
Overview
DIN 7500 screws form threads by plastic deformation, resulting in stronger internal threads.
Types
- DIN 7500 A – For thin sheet metal
- DIN 7500 C – High holding strength
- DIN 7500 D – Heavy-duty applications
Advantages
✔ No chips
✔ Stronger joint
✔ Reusable threads
Applications
- Automotive assemblies
- Electrical cabinets
- Sheet metal fabrication
4. DIN 7504 – Self-Drilling Screws (TEK Screws)
Overview
DIN 7504 screws have a drill point, allowing one-step installation.
Head Types
- Hex washer head
- Pan head
- Countersunk
Drilling Capacity
- Up to 12 mm steel (depending on TEK size)
Applications
- Steel structures
- Roofing systems
- HVAC ducts
Super Industries
Global Manufacturer of Heavy & Custom Engineered Fasteners & Flanges
5. DIN 7971 – Pan Head Self-Tapping Screws
Features
✔ Rounded head
✔ Phillips / slotted drive
✔ General-purpose fastening
Common Uses
- Plastic housings
- Light metal assemblies
6. DIN 7981 – Pan Head Phillips Self-Tapping Screws
Overview
DIN 7981 is widely used in electronics and appliance manufacturing.
Benefits
✔ Easy alignment
✔ High production speed
7. DIN 7982 – Countersunk Self-Tapping Screws
Overview
DIN 7982 screws allow flush surface mounting.
Applications
- Panels
- Hinges
- Sheet metal covers
8. DIN 7983 – Raised Countersunk Screws
Key Feature
✔ Decorative finish
✔ Partial countersinking
Used in visible installations.
9. Materials Offered
- Carbon steel
- Stainless steel (A2 / A4)
- Alloy steel
10. Surface Coatings
- Zinc plated
- Black phosphate
- Hot dip galvanized
- PTFE / Xylan (export)
11. Drive Types
- Phillips
- Pozidriv
- Slotted
- Hex
12. Dimensional Range
- Diameter: 2.2 mm to 8 mm
- Length: 6 mm to 100 mm
(Custom lengths available)
13. Mechanical Properties
- High pull-out resistance
- Vibration resistance
- Torque-optimized design
14. Manufacturing Process
✔ Cold heading
✔ Thread rolling
✔ Heat treatment
✔ Coating & inspection
15. Quality Control
- Thread gauges
- Torque testing
- Coating thickness checks
16. Export Packing
- Bulk cartons
- Small retail packs
- Palletized export boxes
17. Comparison: DIN Screws vs Conventional Screws
| Feature | DIN Screws | Conventional |
|---|---|---|
| Installation | Faster | Slower |
| Tooling | Minimal | Requires tapping |
| Cost efficiency | High | Lower |
18. Custom Screw Solutions
✔ Special drive
✔ Custom head
✔ Coating as per environment
19. Industries Served
- Automotive
- Electrical & Electronics
- Construction
- HVAC
20. Why Super Industries India?
✔ DIN compliance
✔ High-volume production
✔ Custom development
✔ Global export support
21. FAQs
Q: Can DIN screws replace tapped holes?
Yes, in many applications.
Q: Do you provide PPAP or APQP?
Available for automotive customers.