S-90185A595 5/16"-18 x 3" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
• Exceptional load-bearing capacity with 120,000 psi tensile strength, ideal for structural and heavy-duty applications
• Reliable anti-rotation performance through integrated square neck design, preventing loosening under vibration
• Optimized thread engagement with UNC coarse threading, enabling faster installation and reduced cross-threading risks
• Consistent mechanical properties with Rockwell C25 hardness, ensuring dimensional stability under stress
• Broad industrial compatibility meeting ASME B18.5 and SAE J429 standards for reliable interchangeability
• Enhanced safety compliance with RoHS 3 and REACH environmental regulations

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel carriage bolt delivers critical engineering solutions for industrial assembly challenges. The fully threaded UNC coarse thread design ensures rapid installation in wood-to-metal and structural steel connections, while the square neck mechanically locks the fastener against rotation during torque application - eliminating the need for secondary locking components. With 120,000 psi tensile strength and corrosion-resistant plating, it maintains joint integrity in agricultural equipment, trailer manufacturing, and construction frameworks where vibration resistance and environmental durability are paramount. The 3" length provides sufficient engagement for thick material stacks without compromising structural performance.

Specification Summary & Compliance

Manufactured to Class 2A thread fit tolerances with UNC 5/16"-18 coarse threading and right-hand thread direction. Complies with ASME B18.5 dimensional specifications and SAE J429 Grade 5 mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards for hazardous substance restrictions.