S-91592A310 5/8"-11 x 8" SAE J429 Hold-Down Bolts

Key Features & Benefits at a Glance

• Exceptional holding power with 120,000 psi tensile strength for reliable load-bearing in demanding industrial applications
• Optimized hook design with 63° angle and round profile provides secure anchoring while minimizing stress concentrations
• Precision threading with Class 2A fit ensures consistent engagement and reduces cross-threading risks during installation
• Partial threading configuration allows for adjustable positioning while maintaining maximum unthreaded shank strength
• Enhanced durability through Rockwell C25 hardness rating resists deformation under repeated loading cycles
• Industry-standard compliance with SAE J429 guarantees consistent performance and interchangeability
• Environmental responsibility through RoHS 3 and REACH compliance meets modern manufacturing sustainability requirements

Professional Applications & Engineering Value

These steel hook bolts are engineered to solve critical anchoring challenges in industrial settings where vibration, dynamic loads, and security are primary concerns. The 5/8"-11 UNC coarse threading with 3" thread length provides substantial engagement depth for secure fastening, while the partially threaded design maintains full shank diameter through the load-bearing section. The round hook profile with 63° angle distributes stress evenly, preventing cable or strap slippage in hold-down applications. Manufactured from high-strength steel and heat-treated to Rockwell C25 hardness, these bolts withstand extreme tension without compromising their structural integrity, making them ideal for machinery anchoring, transportation securement, and heavy equipment tie-down systems where failure is not an option.

Specification Summary & Compliance

These hold-down bolts feature precise Class 2A thread fit according to UNC standards with coarse thread spacing for rapid installation. The manufacturing process adheres to SAE J429 specifications ensuring dimensional accuracy and mechanical properties. Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming the absence of restricted hazardous substances. The inch system measurements provide compatibility with North American industrial equipment and existing fastening systems.