S-90934A778 5/8"-11 x 1 1/2" SAE J429 Plow Bolts

Key Features & Benefits at a Glance

• Exceptional strength for demanding applications with Grade 8 classification and 150,000 psi tensile strength, ensuring reliable performance under extreme loads.
• Superior corrosion resistance provided by the zinc yellow-chromate plating on steel, extending service life in harsh, outdoor, or high-moisture environments.
• Secure, non-rotating installation enabled by the square neck design, which prevents the bolt from turning during tightening for faster, more stable assembly.
• Optimized for high-vibration environments with coarse UNC threading and Class 2A fit, facilitating easier installation and maintaining clamp force in dynamic conditions.
• Enhanced durability and wear resistance from a Rockwell C33 hardness, reducing the risk of stripping or deformation during use.
• Versatile oval head profile with an 82° countersink angle, providing a flush finish that minimizes snagging and improves safety in moving equipment.
• Full thread engagement along the 1 1/2" length allows for flexible positioning and a stronger grip across various material thicknesses.

Professional Applications & Engineering Value

Engineered for the most demanding industrial and agricultural applications, these Grade 8 plow bolts deliver critical performance where failure is not an option. The zinc yellow-chromate plated steel construction directly combats corrosion, a common failure point in equipment exposed to weather, chemicals, or abrasives. The square neck is a key feature for machinery like snowplows, earth-moving equipment, and heavy-duty attachments, as it locks securely into place without spinning, speeding up assembly and reducing maintenance downtime. Combined with fully threaded UNC coarse spacing and high tensile strength, these bolts maintain integrity under shock and vibration, ensuring long-term reliability and safety in heavy-duty fastening scenarios.

Specification Summary & Compliance

This product adheres to SAE J429 specifications for dimensional and mechanical properties. Threading conforms to UNC coarse standards with a Class 2A fit for consistent assembly. Manufactured in the inch system with precise dimensions including a 5/8"-11 thread size, 1.044" head diameter, and 1 1/2" length. The zinc yellow-chromate plating meets common industry requirements for corrosion protection, and the material composition complies with RoHS and REACH environmental directives.