Stainless Steel DIN251 Hexagon Socket Head with Serrated Flange Screws Supplier In China
Ningbo Teng Qi Fasteners Co., Ltd. is a professional manufacturer and supplier of stainless steel DIN 251 Hexagon Socket Head with Serrated Flange Screws, offering high-quality fastening solutions for a wide range of industrial applications. Manufactured from premium stainless steel grades such as A2 (304) and A4 (316), our screws provide excellent corrosion resistance, high strength, and long-lasting performance in demanding environments. The serrated flange design helps increase locking performance and reduces the risk of loosening caused by vibration, eliminating the need for additional washers in many applications. Available in various thread sizes and lengths, our DIN 251 screws are produced under strict quality control to ensure dimensional accuracy and reliable performance. We also offer OEM and customized manufacturing services, competitive pricing, fast delivery, and worldwide shipping to meet the diverse requirements of customers across different industries.
Specification:
The specification of DIN251 Hexagon Socket Head with Serrated Flange Screws include the following details:
| Product name | Stainless Steel DIN251 Hexagon Socket Head with Serrated Flange Screws |
|---|---|
| Thread Diameter: | M3-M30 |
| Material: | SS304 SS316 |
| Surface Treatment | Plain/Nylok Patch/Thread Locking(3M, Loctite，Precote) |
| Packaging: | Boxes/cartons into wooden pallets |
Dimension Chart of DIN251 Hexagon Socket Head with Serrated Flange Screws：
| Thread Size | M3 | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | |
| P | Pitch | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 |
| dk | min | 5.2 | 6.78 | 7.72 | 9.7 | 12.7 | 15.7 | 17.73 | 20.67 | 23.67 | 26.67 | 29.67 | 32.61 | 35.61 | 39.61 | 44.61 |
| max | 5.5 | 7 | 8 | 10 | 13 | 16 | 18 | 21 | 24 | 27 | 30 | 33 | 36 | 40 | 45 | |
| k | min | 2.75 | 3.82 | 4.82 | 5.7 | 7.7 | 9.7 | 11.57 | 13.57 | 15.57 | 17.57 | 19.48 | 21.48 | 23.48 | 26.48 | 29.48 |
| max | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 27 | 30 | |
| dc | min | 6.7 | 8.8 | 10.7 | 12.3 | 15.7 | 19.7 | 22.7 | 26.7 | 28.7 | 32.4 | 35.4 | 37.4 | 42.4 | 48.4 | 54.1 |
| max | 7 | 9 | 11 | 12.6 | 16 | 20 | 24 | 28 | 30 | 34 | 37 | 39 | 44 | 50 | 56 | |
| c | min | 0.8 | 1 | 1 | 1.3 | 1.8 | 2 | 2.2 | 2.2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 |
| max | 1 | 1.2 | 1.2 | 1.5 | 2 | 2.2 | 2.8 | 2.8 | 3.6 | 3.6 | 3.6 | 3.6 | 4.6 | 4.6 | 4.6 | |
| s | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 14 | 17 | 17 | 19 | 19 | 22 | |
| t | min | 1.3 | 2 | 2.5 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13.5 | 15.5 |
| Number of Teeth | 18 | 18 | 20 | 24 | 24 | 30 | 30 | 39 | 39 | 51 | 51 | 51 | 51 | 51 | 51 | |
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Application of DIN251 Hexagon Socket Head with Serrated Flange Screws:
DIN 251 Hexagon Socket Head with Serrated Flange Screws are widely used in applications where secure fastening and resistance to vibration are essential. The serrated flange provides enhanced locking performance by increasing friction between the screw head and the contact surface, helping to prevent loosening under dynamic loads. Manufactured from high-quality stainless steel, these screws offer excellent corrosion resistance, making them suitable for both indoor and outdoor environments.
| Application | Details |
|---|---|
| Automotive Industry | Used in engines, chassis, transmission systems, suspension components, and other assemblies where vibration-resistant fastening is required. |
| Industrial Machinery | Ideal for machine tools, manufacturing equipment, pumps, compressors, conveyors, and heavy-duty machinery requiring secure and reliable connections. |
| Construction Equipment | Suitable for steel structures, construction machinery, lifting equipment, and structural assemblies exposed to dynamic loads. * Electrical & Electronics – Applied in electrical cabinets, control panels, switchgear, industrial automation equipment, and electronic enclosures. |
| Renewable Energy | Commonly used in solar mounting systems, wind power equipment, battery energy storage systems, and other renewable energy installations. |
| Marine Industry | Stainless steel construction provides excellent corrosion resistance, making these screws suitable for marine equipment, offshore structures, docks, and shipbuilding. |
| Railway & Transportation | Used in railway equipment, commercial vehicles, trailers, and transportation infrastructure requiring durable, vibration-resistant fasteners. |
| Agricultural Equipmen | Suitable for tractors, harvesters, irrigation systems, and other agricultural machinery operating in demanding outdoor environments. |
| Chemical & Food Processing | Stainless steel material offers excellent resistance to corrosion, making these screws suitable for chemical plants, food processing equipment, and pharmaceutical machinery. |