S-94050A190 3/8"-16 x 4" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance for extended service life in marine and outdoor environments thanks to silicon bronze construction
• Enhanced anti-rotation performance provided by the integrated square neck that locks securely into materials during installation
• Reliable coarse threading with UNC 3/8"-16 Class 2A fit ensures easy installation and robust holding power
• Wide, rounded head design distributes clamping force effectively and provides a finished appearance
• Full threading along the 4" length offers versatile fastening depth and maximum adjustability
• Compliance with major industry standards including ASME B18.5 for guaranteed dimensional accuracy and performance
• Environmentally responsible manufacturing meeting RoHS 3 and REACH regulations for safe use

Professional Applications & Engineering Value

This silicon bronze carriage bolt is engineered to solve critical challenges in demanding environments. The marine-grade silicon bronze material provides exceptional resistance to saltwater corrosion, making it ideal for marine hardware, dock construction, and coastal infrastructure. The combination of a fully threaded UNC coarse thread and a square neck under the wide rounded head prevents spinning during torque application, ensuring secure fastening in wood and other soft materials. This design is particularly valuable in outdoor and industrial applications where vibration resistance and long-term durability are paramount, eliminating the need for frequent maintenance or replacement.

Specification Summary & Compliance

This carriage bolt features a 3/8"-16 UNC coarse thread with a Class 2A thread fit for standard clearance and reliable engagement. Manufacturing and dimensional specifications conform to ASME B18.5. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations.