S-93548A607 5/16"-18 x 6" 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 corrosion resistance with zinc-plated steel construction for extended service life in harsh environments
- Prevent rotation during installation thanks to the integrated square neck design that locks securely into materials
- High tensile strength of 60,000 psi ensures reliable performance in heavy-duty structural and construction applications
- Excellent hardness (Rockwell B70) provides enhanced durability and resistance to wear and deformation
- Easy installation and removal with fully threaded UNC coarse spacing and right-hand thread direction
- Precise thread fit (Class 2A) guarantees consistent engagement and reduces the risk of cross-threading
- Comprehensive standard compliance including ASTM A307, SAE J429, and ASME B18.5 for assured quality and interchangeability
Professional Applications & Engineering Value
This zinc-plated steel carriage bolt is engineered to address critical challenges in industrial fastening, particularly where vibration resistance and structural integrity are paramount. The square neck design effectively prevents rotation during tightening, eliminating the need for secondary locking mechanisms and speeding up assembly in wood-to-metal and construction applications. With its Grade 2 strength classification and 60,000 psi tensile strength, it provides reliable load-bearing capacity for framing, trailer manufacturing, and agricultural equipment. The UNC coarse threading ensures quick installation even in softer materials, while the zinc plating offers essential corrosion protection for outdoor and high-moisture environments, reducing maintenance costs and extending service intervals.
Specification Summary & Compliance
This carriage bolt maintains Class 2A thread fit tolerance for consistent assembly performance and features UNC coarse thread (5/16"-18) specifications. Manufacturing complies with ASTM A307, SAE J429, and ASME B18.5 standards, ensuring dimensional accuracy and mechanical properties. The product is RoHS 3 (2015/863/EU) Compliant, meeting environmental regulations for hazardous substance restrictions.
