S-93548A562 1/4"-20 x 5" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ideal for harsh industrial environments
• Exceptional tensile strength of 60,000 psi (Grade 2) ensures reliable performance under heavy loads
• Secure anti-rotation design with integrated square neck that prevents spinning during installation
• Wide rounded head profile distributes clamping force evenly and resists pull-through
• Coarse UNC threading (1/4"-20) provides faster assembly and reduced cross-threading risk
• Full threading along 5" length offers versatile positioning and adjustment flexibility
• Class 2A thread fit guarantees consistent, precision mating with standard nuts

Professional Applications & Engineering Value

This zinc-plated steel carriage bolt delivers critical engineering solutions where vibration resistance and long-term reliability are paramount. The square neck design securely locks into wood or metal surfaces, eliminating rotation during torque application – a common failure point in dynamic industrial equipment. With Grade 2 strength classification and Rockwell B70 hardness, it maintains structural integrity in construction frameworks, agricultural machinery, and transportation applications. The coarse UNC threading ensures rapid installation in soft materials while the full 5" threading accommodates varying material thicknesses. Zinc plating provides sacrificial corrosion protection, extending service life in outdoor or high-moisture environments where standard fasteners would degrade prematurely.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNC 1/4"-20 coarse threading and right-hand thread direction. Fully compliant with ASTM A307, SAE J429, and ASME B18.5 manufacturing specifications. Meets RoHS 3 (2015/863/EU) environmental compliance standards for restricted hazardous substances.