S-92356A587 5/16"-18 x 1 1/2" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Enhanced anti-rotation security thanks to the integrated square neck that prevents spinning during installation
• High tensile strength of 70,000 psi ensures reliable load-bearing capacity for demanding applications
• Excellent durability with Rockwell B55 hardness providing resistance to wear and deformation
• Easy installation and removal with fully threaded UNC coarse thread design and right-hand direction
• Wide rounded head profile distributes clamping force evenly and resists pull-through
• Regulatory compliance meets ASME B18.5 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 5/16"-18 UNC carriage bolts deliver exceptional engineering value in industrial applications where vibration resistance and corrosion protection are critical. The 18-8 stainless steel material provides inherent resistance to rust and chemical exposure, making these fasteners ideal for outdoor structures, marine equipment, and food processing machinery. The square neck design effectively prevents rotation during torque application, eliminating the need for secondary locking mechanisms and reducing assembly time. With fully threaded coarse UNC threads, these bolts offer superior grip in wood, metal, and composite materials, while the rounded head profile minimizes surface damage and provides a finished appearance. These features combine to create a reliable fastening solution that withstands heavy loads and harsh operating conditions while maintaining long-term integrity.

Specification Summary & Compliance

This heavy-duty carriage bolt features precise Class 2A thread fit with 5/16"-18 UNC coarse threading and right-hand direction. Manufacturing complies with ASME B18.5 specifications for dimensional accuracy and performance standards. The product meets environmental compliance requirements including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safe use across various industrial sectors. With a diameter of 0.3125" and length of 1-1/2", the bolt incorporates a square neck measuring 0.19" in length and 0.32" in width for secure anti-rotation performance.