S-92356A161 1/4"-20 x 7 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 through the square neck design that prevents spinning during installation and use
• High tensile strength of 70,000 psi ensures reliable load-bearing capacity for demanding industrial applications
• Optimized thread engagement with UNC coarse threading and Class 2A fit for quick assembly and vibration resistance
• Wide rounded head profile provides excellent bearing surface and reduces surface damage to connected materials
• Environmental compliance assurance with RoHS 3 and REACH regulations for safe use across regulated industries
• Standardized dimensions per ASME B18.5 specification guarantee consistent performance and interchangeability

Professional Applications & Engineering Value

This heavy-duty carriage bolt delivers exceptional engineering value through its 18-8 stainless steel composition and specialized design features. The square neck effectively counters rotational forces in wood-to-metal and structural connections, eliminating the need for additional locking mechanisms. With partial UNC coarse threading and Class 2A thread fit, installation becomes significantly faster while maintaining secure fastening in high-vibration environments like agricultural equipment, trailer assemblies, and construction frameworks. The 7 1/2" length accommodates thick material stacks, making it ideal for heavy timber construction, industrial machinery guarding, and transportation equipment where corrosion resistance and structural integrity are paramount. The combination of 70,000 psi tensile strength and Rockwell B55 hardness ensures these bolts withstand both static and dynamic loading conditions throughout their service life.

Specification Summary & Compliance

This carriage bolt features precise Class 2A thread fit with 1/4"-20 UNC coarse threading and partial threading configuration (minimum 1" thread length). Manufacturing complies with ASME B18.5 standard specifications for dimensional accuracy and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for industrial use. Additional specifications include 0.594" head diameter, 0.145" head height, 0.26" square neck width, and right-hand thread direction.