Self-Tapping Screws (DIN 7981 / ISO 7049)
Pan head self-tapping screws manufactured to DIN 7981 and ISO 7049 standards. Designed for fastening sheet metal, plastic, and wood without pre-drilling. Self-tapping threads cut their own mating thread in the material.
Technical Specifications
| Parameter | Specification |
|---|---|
| Standard | DIN 7981, ISO 7049 |
| Head Type | Pan Head (Cross Recess PH Type) |
| Thread Type | Self-Tapping (Type AB, Type B, Type C) |
| Size Range | ST2.2 – ST6.3 (also M3.5 – M6.3 equivalent) |
| Length Range | 9.5mm – 50mm |
| Material | Carbon Steel (C1018/C1022), Stainless Steel 410 (hardened), SS304 |
| Surface Finish | Zinc Plated (Clear/Black/Yellow), Black Oxide, Passivated (SS) |
| Tensile Strength | 500-800 MPa (carbon steel), 700+ MPa (SS410) |
| Hardness | HRC 28-38 (tapping capability) |
| Drive Type | Phillips (PH0, PH1, PH2, PH3), Torx (T8-T40), Slotted |
| Point Type | Type AB (gimlet point), Type B (flat point) |
| MOQ | 5,000 pcs (standard sizes), 10,000 pcs (small sizes) |
| Lead Time | 5-12 days (standard), 15-25 days (custom) |
| Packaging | Bulk in cartons / Plastic boxes / Custom labeling |
Available Head Types
- DIN 7981: Pan Head (most common)
- DIN 7982: Countersunk (Flat Head)
- DIN 7985: Raised Countersunk (Oval Head)
- DIN 7504: Hex Head Self-Drilling (with drill point)
Available Sizes
ST2.2, ST2.9, ST3.3, ST3.5, ST3.9, ST4.2, ST4.8, ST5.5, ST6.3
Applications
- Sheet metal fabrication
- HVAC ductwork
- Electrical enclosures and panels
- Automotive interior trim
- Furniture assembly
- Plastic housing assembly
- Aluminum profile connections
Certifications
ISO 9001:2015 certified manufacturing. RoHS and REACH compliant. Material certificates available on request.
Frequently Asked Questions
Do self-tapping screws need a pilot hole?
In thin sheet metal and plastics, DIN 7981 screws drive straight in without pre-drilling. In harder or thicker materials a small pilot hole reduces driving torque and protects the cross recess from cam-out.
What sizes are available?
Available sizes range from ST2.2 – ST6.3 (also M3.5 – M6.3 equivalent). Contact us with your required sizes and quantities for a quick quote.
What is the MOQ and lead time?
The MOQ is 5,000 pcs (standard sizes), 10,000 pcs (small sizes). Lead time is 5-12 days (standard), 15-25 days (custom). Mixed-size containers and larger orders are negotiable — send us your requirement for a quick quote.
Do you provide material certificates?
Yes. Material test certificates per EN 10204 3.1 are available on request, and our manufacturing is ISO 9001:2015 certified. RoHS and REACH compliance documentation can also be provided.
