NINGBO YONGBIAO FASTENER CO.,LTD
NINGBO YONGBIAO FASTENER CO.,LTD
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DIN968 is a standard for cross groove pan head self tapping screws established by the German Institute for Standardization (DIN). These screws are commonly utilized for fastening connections between metal sheets and non-metallic materials.The groove configuration of the DIN968 self tapping screws adheres to the cross groove pattern, which can be in either H-type or Z-type. The screw end is equipped with a pointed tail (C-type) or a flat tail (F-type), making it suitable for self-tapping into hard materials. Moreover, the head of the screw is designed in a Pan Head structure with gaskets, and its diameter specifications range from ST2.9 to ST6.3.
DIN968 self-tapping screws are commonly manufactured from carbon steel with surface finishes such as galvanized or nickel plating, as well as from stainless steel grade SUS304 for corrosion resistance. The carbon steel variant of grade 8.8 offers a minimum tensile strength of ≥ 400MPa, while stainless steel grade A2-70 requires a strength level of ≥ 700MPa.These screws adhere to technical specifications that are in line with the international equivalent standard ISO 7049, ensuring consistency in their design and performance characteristics.
| Thread Size d | ST2.9 | ST3.5 | ST4.2 | ST4.8 | (ST5.5) | ST6.3 | ||
| P | Pitch | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | |
| a | max | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | |
| dk | max=nominal size | 7.5 | 9 | 10 | 11.5 | 13 | 14.5 | |
| min | 6.92 | 8.42 | 9.42 | 10.8 | 12.3 | 13.8 | ||
| k | max=nominal size | 2.35 | 2.6 | 3.05 | 3.55 | 3.8 | 4.55 | |
| min | 2.1 | 2.35 | 2.75 | 3.25 | 3.5 | 4.25 | ||
| c | max | 0.8 | 0.9 | 1.1 | 1.35 | 1.6 | 1.8 | |
| min | 0.6 | 0.7 | 0.9 | 1.05 | 1.2 | 1.4 | ||
| r | min | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.25 | |
| R | ≈ | 3.8 | 4.6 | 5.8 | 6.6 | 7.8 | 8.2 | |
| Socket No. | 1 | 2 | 2 | 2 | 3 | 3 | ||
| M1 | From H | Ref. | 3 | 4.2 | 4.6 | 5 | 6.5 | 7.1 |
| Penetration depth | From H | min | 1.35 | 1.4 | 1.8 | 2.26 | 2.49 | 3 |
| max | 1.8 | 2.03 | 2.46 | 2.87 | 3.15 | 3.66 | ||
| M2 | From Z | Ref. | 2.9 | 3.9 | 4.3 | 4.7 | 6.2 | 6.7 |
| Penetration depth | From Z | min | 1.58 | 1.47 | 1.88 | 2.28 | 2.51 | 3.02 |
| max | 1.83 | 1.93 | 2.34 | 2.74 | 2.97 | 3.48 | ||
| y | Ref. | Type C | 2.6 | 3.2 | 3.7 | 4.3 | 5 | 6 |
| Type F | 2.1 | 2.5 | 2.8 | 3.2 | 3.6 | 3.6 | ||
| Type R | / | 2.7 | 3.2 | 3.6 | 4.3 | 5 | ||
DIN968 self-tapping screws are frequently utilized for lightweight connections in a variety of applications, including electrical enclosures, building curtain walls, medical devices, and more. These screws feature a built-in pad design that improves force distribution, making them suitable for preventing loosening in thin plates.
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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. |