S-93548A542 1/4"-20 x 1" ASTM A307, SAE J429, 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
- Superior anti-rotation performance with integrated square neck that locks securely into materials, preventing spin-out during installation and vibration
- Enhanced corrosion resistance through zinc plating, providing durable protection for both indoor and outdoor industrial applications
- High-strength construction with Grade 2 rating and 60,000 psi tensile strength, ensuring reliable performance in demanding environments
- Easy installation and removal with UNC coarse threading and Class 2A thread fit, offering smooth engagement while maintaining precision tolerances
- Wide bearing surface from the rounded carriage head design, distributing load evenly to prevent material damage
- Versatile compatibility with right-hand threading and fully threaded design, accommodating various material thicknesses and assembly requirements
- Industry-proven reliability meeting multiple standards including ASTM A307, SAE J429, and ASME B18.5 for consistent quality assurance
Professional Applications & Engineering Value
These zinc-plated steel carriage bolts deliver exceptional engineering value through their specialized square neck design that solves critical fastening challenges in construction, automotive, and industrial applications. The integrated square neck provides immediate anti-rotation performance, eliminating the common problem of bolt spinning during torque application and under vibration stress. The Rockwell B70 hardness combined with Grade 2 strength classification ensures these fasteners maintain structural integrity in heavy-duty assemblies. The UNC coarse thread pattern with Class 2A fit offers superior engagement in wood, metal, and composite materials, while the zinc plating provides essential corrosion protection for extended service life in demanding environments.
Specification Summary & Compliance
This 1/4"-20 carriage bolt features precise Class 2A thread fit with UNC coarse threading and right-hand direction. Manufacturing complies with ASTM A307, SAE J429, and ASME B18.5 standards, ensuring dimensional accuracy and performance reliability. The product is fully RoHS 3 (2015/863/EU) Compliant, meeting international environmental regulations for hazardous substance restrictions.
