S-90185A234 3/8"-16 x 7/8" 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
- Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
- Exceptional load-bearing capacity with Grade 5 classification and 120,000 psi tensile strength for heavy-duty applications
- Secure anti-rotation installation thanks to the integrated square neck design that prevents spinning during tightening
- Precision thread engagement with Class 3A UNC coarse threading ensuring reliable fastening and vibration resistance
- Optimized material durability with Rockwell C25 hardness providing excellent wear resistance and structural integrity
- Broad compatibility with fully threaded right-hand design fitting standard UNC components and assemblies
- Regulatory compliance assurance meeting ASME B18.5, SAE J429, RoHS 3, and REACH standards for quality and safety
Professional Applications & Engineering Value
This Grade 5 carriage bolt delivers critical engineering solutions where vibration resistance and structural integrity are paramount. The zinc-plated steel construction combats corrosion in outdoor, industrial, and construction settings, while the square neck design eliminates rotation during installation—saving time and ensuring secure placement in wood, metal, or composite materials. With fully threaded UNC coarse threading and Class 3A thread fit, it provides consistent clamping force and ease of assembly in machinery, structural frames, and transportation equipment. The 120,000 psi tensile strength and Rockwell C25 hardness make it ideal for high-stress applications, reducing failure risks and maintenance needs.
Specification Summary & Compliance
This carriage bolt features precise inch system measurements including a 7/8" length, 3/8"-16 UNC coarse thread with Class 3A thread fit for tight tolerances. It complies with ASME B18.5 and SAE J429 specifications, ensuring manufacturing consistency. Environmental and safety standards are met through RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant certifications, confirming the absence of restricted hazardous substances.
