S-94050A120 1/4"-20 x 1" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance from silicon bronze material, ideal for harsh marine and industrial environments
• Secure anti-rotation performance with integrated square neck design that prevents bolt spinning during installation
• Reliable coarse threading with UNC 1/4"-20 thread pattern for faster assembly and reduced cross-threading risk
• Precision Class 2A thread fit ensuring consistent engagement and vibration resistance in demanding applications
• Wide rounded head profile providing enhanced bearing surface and improved load distribution
• Full threading along entire 1" length offering maximum fastening flexibility and adjustment capability
• Comprehensive regulatory compliance meeting ASME B18.5 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These silicon bronze carriage bolts deliver exceptional engineering value in corrosive environments where standard steel fasteners would rapidly deteriorate. The square neck design provides critical anti-rotation security, eliminating the need for additional locking mechanisms while maintaining structural integrity. With UNC coarse threading and Class 2A thread fit, these bolts ensure reliable installation in wood, metal, and composite materials without stripping or galling. The fully threaded configuration allows for versatile positioning and secure fastening across varying material thicknesses. Particularly valuable in marine applications, boat building, and coastal infrastructure, these fasteners resist saltwater corrosion while maintaining mechanical strength. The combination of silicon bronze material properties and precision manufacturing makes them ideal for permanent installations where disassembly is infrequent but corrosion resistance is paramount.

Specification Summary & Compliance

This 1/4"-20 UNC carriage bolt features precise dimensional specifications including 0.594" head diameter, 1" length, and square neck measuring 0.26" width with 0.16" length. The Class 2A thread fit ensures proper clearance and engagement according to unified thread standards. Manufactured in compliance with ASME B18.5 specifications for carriage bolt dimensions and tolerances. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming restriction of hazardous substances for safe industrial use.