S-93180A916 M8 x 20 mm DIN 603 Carriage Bolts

Carriage Bolts

0851FA00070 Carriage Bolts
0851FA00070 Carriage Bolts

Image may differ from product. See technical specification for details.

Part No.
Part No. 0851FA00070
Equivalent to mcmaster :
93180A916

Basic Information

System of Measurement Metric
Specifications Met DIN 603

Head Parameters

Head Type Rounded
Head Diameter 20.65 mm
Head Height 4.88 mm
Rounded Head Profile Wide
Rounded Head Style Carriage

Neck & Shank Parameters

Neck Type Square
Neck Length 5.6 mm
Neck Width 8 mm

Dimension Parameters

Length 20 mm

Thread Parameters

Thread Type Metric
Thread Size M8
Threading Fully Threaded
Thread Direction Right Hand
Thread Pitch 1.25 mm
Thread Spacing Coarse
Thread Fit Class 8g

Material & Strength Parameters

Material 316 Stainless Steel
Hardness Rockwell B55
Tensile Strength 70000 psi

Finish & Compliance Parameters

REACH Compliant
RoHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial and marine environments
  • Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, heavy-duty load-bearing
  • Secure anti-rotation performance provided by the integrated square neck, preventing bolt spin during installation and use
  • Optimized for quick assembly with a coarse M8 x 1.25mm thread and Class 8g fit, ensuring easy engagement and reduced installation time
  • Enhanced durability and longevity from the rounded carriage head design, which distributes load and resists surface damage
  • Full regulatory compliance with DIN 603 standards, RoHS 3, and REACH, guaranteeing safety and environmental responsibility
  • Versatile fully-threaded design allowing for maximum adjustability and grip length in various material thicknesses

Professional Applications & Engineering Value

This M8 carriage bolt is engineered to address critical challenges in structural and mechanical assemblies where vibration resistance, corrosion, and long-term reliability are paramount. The 316 stainless steel material provides excellent resistance to chemicals, saltwater, and extreme temperatures, making it a top choice for marine hardware, food processing equipment, and outdoor infrastructure. The square neck securely locks into materials, eliminating rotation during torque application and preventing loosening under dynamic loads. Combined with the metric coarse threading and fully threaded shank, it ensures rapid installation and robust performance in high-stress applications, reducing maintenance cycles and total cost of ownership for industrial operators.

Specification Summary & Compliance

This bolt features a Class 8g thread fit per ISO/metric standards, ensuring precise dimensional accuracy and interchangeability. Manufacturing and material specifications strictly adhere to DIN 603. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances and safe for use in regulated industrial and consumer applications.

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