Product Description:
DIN968 Standard Self Tapping Screw Overview:
DIN968 is a standard established by the German Institute for Standardization (DIN) for cross groove pan head self tapping screws. These screws are commonly used to secure metal sheets and other materials.
Features of DIN968 Self Tapping Screws:
The groove type of DIN968 screws is typically a cross groove (H-type or Z-type), and the tail can be a pointed tail (C-type) or flat tail (F-type). This design is ideal for tapping into hard materials. The screws have a Pan Head structure with gaskets and come in diameter sizes ranging from ST2.9 to ST6.3.
Features:
In terms of material composition, DIN968 self-tapping screws are commonly manufactured using two main types of materials: carbon steel and stainless steel. The carbon steel screws typically have a durable surface finish of either galvanized or nickel plating. Meanwhile, the stainless steel variant, specifically SUS304, is known for its corrosion-resistant properties.There are specific strength requirements for these screws based on the material used. Carbon steel screws, with a grade of 8.8, must have a tensile strength of at least 400MPa. On the other hand, stainless steel screws of grade A2-70 need to meet a higher strength threshold of at least 700MPa to ensure reliable performance.It's important to note that the technical specifications of DIN968 self-tapping screws align with the international standard ISO 7049. This ensures consistency in the design, performance, and quality of these fasteners across different regions and applications.
Technical Parameters:
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 |
Applications:
DIN968 self tapping screws are widely employed for assembling lightweight components in various applications such as electrical enclosures, building curtain walls, medical devices, and more. These screws feature a built-in pad design that improves force distribution and is particularly suitable for preventing loosening in thin plates.
The self-tapping screws designed in accordance with the DIN968 standard are favored for their versatility and effectiveness in joining materials. The enhanced force uniformity provided by the built-in pad design makes these screws ideal for applications with specific anti-loosening needs, especially when working with thin plates.
Company Certificate:
Packaging:
 |  |  |
| 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. |
