S-93604A617 1/4"-20 x 1 1/2" ASTM A307, ASTM A153, 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
- Exceptional corrosion protection through hot-dipped galvanized steel coating, ideal for outdoor and high-moisture environments
- Superior load-bearing capacity with 60,000 PSI tensile strength and Grade 2 classification for reliable structural connections
- Enhanced anti-rotation performance thanks to the square neck design that prevents spinning during installation in wood and metal
- Optimized thread engagement with fully threaded UNC coarse pattern for faster assembly and stronger holding power
- Consistent mechanical properties ensured by Rockwell B70 hardness for repeated use without deformation
- Broad industry compliance meeting ASTM A307, ASTM A153, and ASME B18.5 standards for quality assurance
- Environmental regulation adherence with RoHS 3 and REACH compliance for sustainable procurement
Professional Applications & Engineering Value
This hot-dipped galvanized steel carriage bolt delivers critical corrosion resistance where standard fasteners fail, particularly in construction, agricultural equipment, and outdoor structures exposed to weather elements. The Grade 2 strength classification combined with UNC coarse threading provides exceptional pull-out resistance in wood-to-metal and timber framing applications. The square neck securely locks into materials during tightening, eliminating rotation issues that compromise joint integrity. With full threading along the 1-1/2" length, installers achieve maximum thread engagement in both thick and thin materials, while the rounded head offers a finished appearance with reduced snagging hazards in industrial settings.
Specification Summary & Compliance
Precision-manufactured to Class 2A thread fit tolerances with 1/4"-20 UNC coarse thread specifications. Meets mechanical requirements per ASTM A307 and coating standards under ASTM A153, with dimensional compliance to ASME B18.5. Fully certified RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for hazardous substance restriction compliance.
