S-91589A851 3/4"-10 x 4" SAE J429 Plow Bolts

Key Features & Benefits at a Glance

• Exceptional Strength for Demanding Applications: Grade 8 classification and 150,000 psi tensile strength ensure reliable performance under extreme loads, preventing fastener failure.
• Secure Anti-Rotation Locking: The integral key locking neck design prevents the bolt from spinning during installation and operation, providing a stable, vibration-resistant connection.
• Optimized for Heavy Machinery: The flat head with a standard 60° countersink sits flush with surfaces, making it ideal for plow shares and other industrial equipment where protrusions are not permissible.
• Superior Durability and Wear Resistance: Manufactured from high-quality steel with a Rockwell C33 hardness, this bolt offers excellent resistance to abrasion and deformation.
• Reliable and Easy Assembly: The coarse 3/4"-10 UNC thread with a Class 2A fit ensures quick and easy installation, even in dirty or debris-filled environments common in agriculture.
• Reduced Maintenance and Downtime: The robust construction and high-strength material minimize the need for frequent replacements, lowering long-term operational costs.
• Compliance with Industry Standards: Meets SAE J429 specifications and is RoHS 3 and REACH compliant, guaranteeing material quality and environmental safety for global supply chains.

Professional Applications & Engineering Value

This Grade 8 Plow Bolt is engineered to solve critical fastening challenges in high-stress, high-vibration environments. Its key locking neck is a pivotal feature, mechanically preventing rotation within the mounting hole—a common failure point in agricultural implements like snow plows and earth-moving equipment. The flat head design provides a smooth, flush finish that avoids material buildup and reduces drag. Constructed from high-strength steel and heat-treated to a Rockwell C33 hardness, it withstands severe impact and abrasive wear, ensuring the structural integrity of the assembly. The partially threaded shank with 3/4"-10 UNC coarse threading allows for a secure grip in thick materials, making it an indispensable heavy-duty fastener for the agricultural and construction sectors where reliability is non-negotiable.

Specification Summary & Compliance

This plow bolt features a 3/4"-10 UNC thread with a Class 2A fit for consistent dimensional accuracy and assembly. It is manufactured in compliance with the SAE J429 standard for Grade 8 fasteners, ensuring mechanical properties and performance. The product is also verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict regulations on hazardous substances and chemical safety.