S-90185A157 3/4"-10 x 3" 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 anti-rotation performance with a square neck design that locks securely into materials, preventing spinning during installation and use.
- Exceptional tensile strength of 120,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Enhanced corrosion resistance from the black-oxide steel finish, extending service life in demanding industrial environments.
- Wide, rounded head profile distributes load evenly and provides a finished appearance, minimizing surface damage.
- Coarse UNC threading with Class 2A fit allows for quick assembly and secure fastening in wood and metal applications.
- Grade 5 strength classification guarantees consistent mechanical properties for heavy-duty fastening requirements.
- Full threading along the 3" length offers versatile positioning and maximum grip in various material thicknesses.
Professional Applications & Engineering Value
This Grade 5 carriage bolt is engineered to address common industrial fastening challenges, such as vibration loosening and material wear. The black-oxide steel construction provides a durable, corrosion-resistant surface ideal for outdoor equipment, agricultural machinery, and structural assemblies. Its square neck design bites into the material, eliminating rotation during torque application—critical for wood-to-metal connections and framing projects. With coarse UNC threads and Class 2A fit, it ensures rapid installation and reliable hold in softwoods or sheet metals, reducing assembly time while maintaining 120,000 PSI tensile strength for heavy-load scenarios like trailer hitches and construction frameworks.
Specification Summary & Compliance
This carriage bolt adheres to precise dimensional standards, including 3/4"-10 UNC coarse thread with Class 2A tolerance for consistent fit. Manufactured in compliance with ASME B18.5 specifications, it meets Grade 5 mechanical properties. The product is certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental safety and regulatory adherence for global industrial use.
