S-93180A340 5/16"-18 x 2" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction
• Exceptional anti-rotation performance ensured by the integrated square neck design
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Reliable coarse threading with UNC 5/16"-18 threads and Class 2A fit for easy installation and secure fastening
• Full thread coverage along the 2" length provides maximum grip and adjustment flexibility
• Wide, rounded carriage head with 0.719" diameter offers excellent bearing surface and clean finished appearance
• Regulatory compliance with ASME B18.5, RoHS 3, and REACH ensures safety and environmental standards are met

Professional Applications & Engineering Value

This 316 stainless steel carriage bolt delivers critical performance where corrosion resistance and structural integrity are paramount. The square neck design mechanically locks into materials during installation, preventing rotation and eliminating the need for secondary locking mechanisms in wood, metal, and composite assemblies. With fully threaded UNC coarse threading and Class 2A thread fit, it provides rapid installation in production environments while maintaining precise tolerances. The combination of 70,000 psi tensile strength and marine-grade 316 stainless steel makes it ideal for industrial machinery, marine hardware, chemical processing equipment, and outdoor structures exposed to moisture, chemicals, and temperature variations.

Specification Summary & Compliance

This carriage bolt features 5/16"-18 UNC coarse threading with Class 2A thread fit ensuring dimensional accuracy and interchangeability. Manufactured to ASME B18.5 specifications with complete RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, meeting current environmental and safety regulations for industrial components.