S-94050A140 5/16"-18 x 3/4" ASME B18.5 Carriage Bolts
Carriage Bolts
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Basic Information
Head Parameters
Neck & Shank Parameters
Dimension Parameters
Thread Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance for extended service life in harsh marine and industrial environments
- Secure anti-rotation performance with integrated square neck that prevents spinning during installation
- Maximum durability with fully threaded UNC coarse threading designed for high-strength applications
- Precision thread fit with Class 2A tolerance ensuring reliable mating with standard nuts
- Industry-standard compliance meeting ASME B18.5 specifications for dimensional accuracy
- Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated applications
- Wide-rounded head design providing enhanced bearing surface and improved aesthetic appearance
Professional Applications & Engineering Value
These silicon bronze carriage bolts deliver exceptional performance in demanding applications where corrosion resistance is critical. The marine-grade silicon bronze material provides excellent protection against saltwater corrosion, making them ideal for marine hardware, dock construction, and coastal infrastructure. The integrated square neck beneath the rounded head prevents rotation during tightening, eliminating the need for secondary locking mechanisms and reducing installation time. The fully threaded UNC coarse threading with Class 2A fit ensures reliable engagement in wood, metal, and composite materials, while the right-hand thread direction provides standard installation compatibility. These features combine to create a high-reliability fastening solution for industrial equipment, marine structures, and outdoor applications where long-term performance is essential.
Specification Summary & Compliance
This carriage bolt features 5/16"-18 UNC coarse threading with Class 2A thread fit for precision engagement and meets ASME B18.5 dimensional standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated applications. Manufacturing specifications include a 0.719" head diameter, 0.176" head height, 0.33" square neck width, and 3/4" length with full threading for maximum fastening versatility.
