S-91589A806 5/8"-11 x 3" SAE J429 Plow Bolts

Key Features & Benefits at a Glance

• Exceptional strength and durability with Grade 8 classification and 150,000 psi tensile strength, ensuring reliable performance under extreme loads and in demanding environments.
• Secure anti-rotation locking provided by the key locking neck design, preventing bolt loosening from vibration and shock in heavy machinery applications.
• Optimized for flush mounting with a standard flat head and 60° countersink angle, creating a smooth surface and reducing snagging risks.
• Superior material integrity from high-strength steel and Rockwell C33 hardness, offering excellent resistance to wear and deformation.
• Reliable and easy installation with coarse UNC threading and Class 2A thread fit, enabling quick assembly while maintaining precise thread engagement.
• Versatile partial threading allowing the unthreaded shank to bear shear loads effectively, ideal for components requiring pivoting or alignment.
• Comprehensive compliance assurance meeting SAE J429 specifications and environmental standards like RoHS 3 and REACH, guaranteeing quality and regulatory adherence.

Professional Applications & Engineering Value

This Grade 8 Plow Bolt is engineered to solve critical fastening challenges in industrial and heavy equipment applications, particularly snow plows, agricultural machinery, and construction attachments. Its key locking neck design is a key innovation, mechanically preventing rotation and secure fastening under constant vibration and impact—a common failure point in such equipment. The combination of high-strength steel and a Rockwell C33 hardness rating ensures the bolt can withstand high tensile and shear stresses without stripping or breaking. The flat head with a standard 60° countersink angle provides a clean, flush finish that minimizes protrusion and material buildup, which is essential for blades and cutting edges. The partially threaded design with UNC coarse threading allows the unthreaded shank to act as a precision shear plane, while the threaded portion ensures strong clamping force, making it a versatile and robust solution for demanding engineering assemblies.

Specification Summary & Compliance

This plow bolt features precise Class 2A thread fit and conforms to the UNC thread standard with a size of 5/8"-11. It is manufactured in compliance with the SAE J429 specification for dimensional and mechanical properties. The product is also verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and safety regulations for industrial use.