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Stainless Steel U-BOLT DIN 3570 GB 2329 ASME B 18.31.5 automotive fastener

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Our Stainless Steel U-Bolts DIN 3570 are designed for straightforward and secure installation:

  • Standard DIN 3570 Dimensions: Adherence to DIN 3570 ensures dimensional accuracy and compatibility with standard mounting practices.
  • Versatile Shapes and Sizes: Available in various bend radii (Form A - round bend, Form B - square bend) and a wide range of leg lengths and thread sizes to accommodate diverse automotive components.
  • Secure Clamping: When used with appropriate nuts and washers, these U-bolts provide a firm and reliable clamping force.

Key Advantages for Your Applications:

  • Ultimate Corrosion Protection: Ideal for applications exposed to moisture, road salt, chemicals, and other corrosive elements, ensuring long-term reliability.
  • Extended Service Life: The inherent durability of stainless steel minimizes the need for frequent replacements, reducing maintenance costs.
  • High Strength and Reliability: Provides a secure and dependable hold for critical automotive components.
  • Wide Temperature Suitability: Performs reliably across a broad range of operating temperatures within a vehicle.
  • Versatile Application: Adaptable for securing various components beyond just pipes and tubes.



Product Name Standard Material & Finish Diameter (Shank) Inside Width Thread Length
Stainless Steel U-Bolt GB/T 14-2013 A2-70 (304 Stainless), Passivated M10 80 mm 40 mm
Stainless Steel U-Bolt GB/T 14-2013 A4-80 (316 Stainless), Plain M12 100 mm 50 mm
Stainless Steel U-Bolt ASME B18.2.1 ASTM A193 B8 Class 2, Electro-polished 3/8" (9.525 mm) 3.5" (88.9 mm) 1.5" (38.1 mm)
Stainless Steel U-Bolt DIN 3570:2018 1.4301 (A2), Hot-Dip Galvanized M8 60 mm 30 mm
Stainless Steel U-Bolt ISO 3266:2014 A2-70, Zinc-Nickel Coated M16 120 mm 60 mm
Stainless Steel U-Bolt SAE J494:2020 316L Stainless, PTFE Coated 1/2" (12.7 mm) 4" (101.6 mm) 2" (50.8 mm)
Stainless Steel U-Bolt JIS B 1180:2014 SUS304, Mirror Polished M14 110 mm 55 mm
Stainless Steel U-Bolt EN 15048-2:2007 A4-80, Anti-Galling Coating M20 150 mm 75 mm
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Zhejiang Zhongrui Auto Parts Co., Ltd.
Zhejiang Zhongrui Auto Parts Co., Ltd.
As China Automotive Stainless Steel U-BOLT DIN 3570 GB 2329 ASME B 18.31.5 automotive fastener Suppliers and Custom Stainless Steel U-BOLT DIN 3570 GB 2329 ASME B 18.31.5 automotive fastener Factory.
Zhejiang Zhongrui Auto Parts Co., Ltd. was founded in 1986. The original unit is located in Ruian City, one of the birthplaces of Wenzhou's economic model, and is located in Tangxia, the "Auto Parts Capital of China". In 2004, in order to further expand its production scale, the company The industrial park in Jiaxing City, Zhejiang, which is located in a very advantageous location, acquired new land and built a modern production plant and office building. The company covers an area of ​​36,237 square meters, with a factory area of ​​20,000 square meters. The company's fixed assets are 130 million yuan.
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