S-90185A182 3/8"-16 x 2" ASME B18.5, SAE J429 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
- Exceptional corrosion resistance with zinc-flake coating for long-lasting performance in harsh industrial environments
- High tensile strength rating of 120,000 psi ensures reliable fastening in demanding structural applications
- Square neck design prevents rotation during installation, saving time and improving assembly efficiency
- Class 2A thread fit provides optimal balance between easy assembly and secure fastening performance
- Grade 5 classification guarantees consistent mechanical properties and load-bearing capacity
- Coarse UNC threading enables quick installation and superior resistance to vibration loosening
- Full threading allows for maximum adjustability and versatile application across various material thicknesses
Professional Applications & Engineering Value
This Grade 5 carriage bolt with zinc-flake coated steel construction addresses critical engineering challenges in heavy-duty applications where corrosion resistance and structural integrity are paramount. The square neck carriage bolt design eliminates spinning during nut tightening, significantly reducing installation time in construction, agricultural equipment, and structural steel assemblies. The 3/8"-16 UNC coarse thread configuration provides excellent engagement in wood, metal, and composite materials while resisting vibration-induced loosening. With Rockwell C25 hardness and 120,000 psi tensile strength, this fully threaded fastener maintains clamping force under extreme loads, making it ideal for trailer manufacturing, bridge components, and industrial machinery where failure is not an option.
Specification Summary & Compliance
This carriage bolt features precise Class 2A thread fit with UNC coarse spacing (3/8"-16) and complies with ASME B18.5 and SAE J429 Grade 5 specifications. The fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards, ensuring safe use across regulated industries. Manufacturing adheres to strict dimensional tolerances including 0.844" head diameter, 0.208" head height, and 2" length with square neck configuration for secure anti-rotation performance.
