S-93180A503 3/8"-16 x 8" 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 316 stainless steel construction, ideal for harsh environments and chemical exposure
- Exceptional tensile strength rated at 70,000 psi for reliable performance in heavy-duty applications
- Secure anti-rotation design featuring a square neck that locks into materials to prevent spinning during installation
- Optimized thread engagement with Class 2A UNC coarse threads ensuring easy installation and vibration resistance
- Enhanced durability with Rockwell B55 hardness providing excellent wear resistance and long service life
- Wide rounded head profile distributes clamping force evenly and resists pull-through in soft materials
- Regulatory compliance meeting ASME B18.5 specifications and environmental standards including RoHS 3 and REACH
Professional Applications & Engineering Value
This 316 stainless steel carriage bolt delivers exceptional engineering value in demanding industrial settings where corrosion resistance and structural integrity are paramount. The partially threaded UNC coarse thread design provides optimal grip in wood, metal, and composite materials, while the square neck effectively prevents rotation during tightening - a critical feature in assembly line applications and structural frameworks. The 8-inch length accommodates thick material stacks commonly found in construction, transportation equipment, and marine applications. With its 70,000 psi tensile strength and Rockwell B55 hardness, this fastener maintains performance under sustained loads and vibration, making it ideal for bridge components, conveyor systems, and outdoor infrastructure where maintenance access is limited.
Specification Summary & Compliance
This carriage bolt features precise Class 2A thread fit with 3/8"-16 UNC coarse threading and partial threading with minimum 1" thread length. Manufactured to ASME B18.5 specifications with dimensional accuracy including 0.844" head diameter and 0.208" head height. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
