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| Categories | Self Tapping Screw |
|---|---|
| Brand Name: | YONGBIAO |
| Model Number: | DIN7981 Tapping Screw |
| Place Of Origin: | ZHEJIANG CHINA |
| Certification: | ISO 9001 |
| MOQ: | 800-1000KG |
| Price: | 0.01-0.05 |
| Packaging Details: | Plastic Bag / Paper Box |
| Delivery Time: | 7-25Days |
| Payment Terms: | T/T |
| 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 |
| Company Info. |
| NINGBO YONGBIAO FASTENER CO.,LTD |
| Verified Supplier |
| View Contact Details |
| Product List |
DIN7981 screws are German standard cross slot pan head self tapping screws, mainly suitable for fastening connections of thin metal plates or non-metallic materials.Its head type: semi-circular disc head, with groove types including: cross groove (H-shaped or Z-shaped).Its tail types include pointed tail (C-type) or flat tail (F-type), and different specifications can be selected according to the usage scenario.
The performance requirements of DIN7981 include the clarity of the screw thread, the accuracy of the tail tooth lifting, and the alignment of the head axis, all of which must adhere to strict standards.During the inspection with the cross groove plug gauge, it is essential to ensure the matching degree of the batch head and to prevent slipping.
| Screw Thread d | 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 | |
| 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 | |
| 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 |
| 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 primarily utilized in electronic appliances, building curtain walls, medical equipment, packaging machinery, and more. They offer ease of installation without the need for pre-tapping threaded holes. However, these screws have a limited load-bearing capacity and are not ideal for high-load applications.
The technical specifications of DIN7981 self tapping screws are essentially in line with ISO 7049 and DIN7981 standards, with GB/T 845 serving as the equivalent Chinese standard.
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| Carton Packaging | Outer Cartonbox Packaging | Pallet Packaging |
| Bolts are packed in neutral packaging boxes, with standard quantities arranged in small cartons. The exact number of units per carton will be confirmed with the customer to align with their specific requirements. Customized packaging configurations are available upon request. | The small cartons are then consolidated into larger master cartons for secure transportation and storage. The quantity per master carton can be customized based on client specifications or aligned with standard logistical requirements. | The palletized units are securely wrapped with waterproof film and reinforced with packaging straps. Customer-specific shipping marks or labels are affixed to each pallet, ensuring clear identification and compliance with logistics requirements. This final packaging stage guarantees weather-resistant protection and stability during transportation. |
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