S-98930A208 M12 x 70 mm ASME B18.5, ISO 8678 Carriage Bolts
Carriage Bolts
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Basic Information
Head Parameters
Neck & Shank Parameters
Dimension Parameters
Thread Parameters
Material & Strength Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc yellow-chromate plating, extending service life in harsh industrial environments
- Exceptional tensile strength of 110,000 psi and Class 8.8 grade ensures reliable performance under heavy loads
- Secure anti-rotation locking with integrated square neck design that prevents spinning during installation
- Optimized thread engagement with M12 coarse thread (1.75mm pitch) and Class 6h fit for quick assembly and vibration resistance
- Enhanced durability with Rockwell C22 hardness providing excellent wear resistance and structural integrity
- Versatile partial threading allowing unthreaded shank section for precise clamping force distribution
- Industry-standard compliance meeting ASME B18.5 and ISO 8678 specifications for guaranteed interchangeability
Professional Applications & Engineering Value
This M12 carriage bolt delivers critical engineering solutions for industrial fastening challenges where vibration resistance and security are paramount. The zinc yellow-chromate plated steel construction provides superior corrosion protection in demanding environments, while the square neck design mechanically locks into mating materials to prevent rotation during torque application - eliminating the need for secondary locking components. The Class 8.8 strength grade and 110,000 psi tensile strength ensure structural integrity in heavy machinery, construction frameworks, and transportation equipment. The metric coarse threading (M12 x 1.75mm) with partial threading configuration allows for optimal clamp load distribution, making it ideal for wood-to-metal applications, structural steel connections, and agricultural equipment where reliable, maintenance-free fastening is essential.
Specification Summary & Compliance
This carriage bolt features precision metric threading with M12 diameter, 1.75mm pitch, and Class 6h thread fit tolerance. The fastener maintains Rockwell C22 hardness and meets Class 8.8 strength classification requirements. Manufacturing and dimensional specifications comply with ASME B18.5 and ISO 8678 standards, ensuring consistent quality and international compatibility. The product conforms to RoHS and REACH environmental regulations for industrial use.
