DIN7981 Slotted Posidriv Self Tapping Screw Type C Point
| Attribute | Value |
|---|---|
| Common Slot Type | Slotted/Posidriv/Trox |
| Surface Treatment | Electroplating/passivation |
| Customized Support | OEM, ODM |
| Self-Drilling | Yes |
| Thread Coverage | Full Thread |
| Trademark | YB |
| Thread | Coarse/Fine Thread |
| Point Type | Type C |
DIN7981 screws are German standard cross slot pan head self-tapping screws, primarily designed for fastening connections of thin metal plates or non-metallic materials. These screws feature a semi-circular disc head with groove types including cross groove (H-shaped or Z-shaped). Available with pointed tail (C-type) or flat tail (F-type) options, different specifications can be selected based on application requirements.
- Manufactured to strict DIN7981 standards for thread clarity and dimensional accuracy
- Precision-engineered tail tooth lifting for optimal performance
- Perfect head axis alignment prevents slipping during installation
- Rigorous quality control ensures batch consistency
| Screw Threadd | ST2.2 | ST2.9 | ST3.5 | (ST3.9) | ST4.2 | ST4.8 | ST5.5 | ST6.3 |
|---|---|---|---|---|---|---|---|---|
| P (Pitch) | 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 (max=nominal size) | 4.2 | 5.6 | 6.9 | 7.5 | 8.2 | 9.5 | 10.8 | 12.5 |
| dk (min) | 3.9 | 5.3 | 6.54 | 7.14 | 7.84 | 9.14 | 10.37 | 12.07 |
| k (max=nominal size) | 1.8 | 2.2 | 2.6 | 2.8 | 3.05 | 3.55 | 3.95 | 4.55 |
| k (min) | 1.55 | 1.95 | 2.35 | 2.55 | 2.75 | 3.25 | 3.65 | 4.25 |
| y (max) Type C | 2 | 2.6 | 3.2 | 3.5 | 3.7 | 4.3 | 5 | 6 |
| y (max) Type F | 1.6 | 2.1 | 2.5 | 2.7 | 2.8 | 3.2 | 3.6 | 3.6 |
| Socket No. | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 |
| M1 ≈ | 2.6 | 3 | 4.2 | 4.4 | 4.6 | 5 | 6.5 | 7.1 |
| M2 ≈ | 2.4 | 2.9 | 3.9 | 4.1 | 4.3 | 4.7 | 6.2 | 6.7 |
DIN7981 self-tapping screws are widely used in:
- Electronic appliances and components
- Building curtain wall systems
- Medical equipment manufacturing
- Packaging machinery assembly
These screws enable easy installation without requiring pre-tapped threaded holes. Note that they have limited load-bearing capacity and are not recommended for high-load applications.
Technical specifications comply with ISO 7049 and DIN7981 standards, with GB/T 845 as the equivalent Chinese standard.
| Carton Packaging | Outer Carton Box Packaging | Pallet Packaging |
|---|---|---|
| Neutral packaging boxes with standard quantities arranged in small cartons. Custom quantities available per customer requirements. | Small cartons consolidated into larger master cartons for secure transportation. Custom configurations available. | Weatherproof palletized units with waterproof film and reinforced straps. Custom shipping marks and labels available. |
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