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Reduced Shank Bolts and Screws with Coarse Thread - hexagon head bolts DIN 931/ISO 4014/GB 5782

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Our Reduced Shank Hexagon Head Bolts and Screws with Coarse Thread are designed for straightforward and efficient assembly:

  • Standard Hex Head: Compatible with commonly used wrenches and sockets for easy tightening.
  • Coarse Thread: Offers quick engagement and strong holding power, suitable for high-speed assembly processes.
  • Clear Shoulder: The transition between the head/shank and the threaded portion is usually well-defined, ensuring proper seating and clamping.
  • Variety of Materials and Finishes: Available in various steel grades and surface treatments to meet specific automotive requirements for strength, corrosion resistance, and temperature tolerance.

Key Advantages for Your Applications:

  • Weight Savings: Contributes to overall vehicle weight reduction and improved fuel economy.
  • Potential Cost Reduction: Less material usage in the shank can lead to lower manufacturing costs.
  • Efficient Assembly: Easier initial alignment and faster thread engagement in some applications.
  • Strong Holding Power: The coarse thread provides reliable fastening and resistance to loosening.
  • Versatile Applications: Suitable for numerous non-critical alignment and fastening tasks where weight is a concern.
  • Standard Tooling: Can be installed using standard hex wrenches and sockets.

Ideal for:

  • Attaching Non-Structural or Secondary Components: Fastening plastic trims, interior panels, and lightweight brackets where full shank strength is not required.
  • Securing Components with Pre-Aligned Holes: Efficiently joining parts with precisely aligned holes where the shank primarily serves for guidance.
  • Applications Where Weight Reduction is a Key Design Goal: Contributing to the overall lightweighting efforts in modern vehicle design.
  • Certain Body Panel Attachments: Securing specific body panels or covers where a lighter fastener is sufficient.
  • Assembly Line Efficiency: The coarse thread facilitates faster initial engagement in high-volume production.



Product Name Standard Material & Finish Diameter Length
Reduced Shank Hexagon Head Bolts GB/T 5784-1986 Carbon Steel, Zinc Plated M6 20 mm
Reduced Shank Hexagon Head Bolts GB/T 5784-1986 Carbon Steel, Dacromet M8 25 mm
Reduced Shank Hexagon Head Bolts GB/T 5784-1986 Alloy Steel, Black Oxide M10 30 mm
Reduced Shank Hexagon Head Bolts ISO 4015:2022 34CrMo4 Steel, Galvanized M6 (1/4") 1.5" (38.1 mm)
Reduced Shank Hexagon Head Bolts ISO 4015:2022 42CrMo4 Steel, Plain M8 (5/16") 2" (50.8 mm)
Reduced Shank Hexagon Head Bolts ASME B18.2.3.9M ASTM A490, Zinc Flake 3/8" (9.525 mm) 1.5" (38.1 mm)
Reduced Shank Hexagon Head Bolts DIN 6922:1983 C35 Steel, Hot-Dip Galvanized M6 20 mm
Reduced Shank Hexagon Head Bolts DIN 6922:1983 C45 Steel, Phosphated M10 30 mm
Reduced Shank Hexagon Head Bolts JIS B 1180:2014 SCM435 Alloy Steel, Zn-Ni M8 25 mm
Reduced Shank Hexagon Head Bolts Q 180 35CrMo Steel, Electroplated M12 40 mm
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Zhejiang Zhongrui Auto Parts Co., Ltd.
Zhejiang Zhongrui Auto Parts Co., Ltd.
As China Automotive Reduced Shank Bolts and Screws with Coarse Thread - hexagon head bolts DIN 931/ISO 4014/GB 5782 Suppliers and Custom Reduced Shank Bolts and Screws with Coarse Thread - hexagon head bolts DIN 931/ISO 4014/GB 5782 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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