S-93180A208 1/4"-20 x 1/2" 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 in harsh environments thanks to 316 stainless steel construction
- Exceptional tensile strength of 70,000 psi for reliable performance in heavy-duty applications
- Secure anti-rotation locking provided by the integrated square neck design
- Wide bearing surface from the rounded carriage head distributes load effectively
- Precision coarse threading (UNC) ensures quick assembly and reliable grip in various materials
- Full threading along the entire length offers maximum fastening flexibility
- Industry-standard compliance with ASME B18.5 guarantees consistent quality and interchangeability
Professional Applications & Engineering Value
These 316 stainless steel carriage bolts deliver critical performance in demanding industrial settings where corrosion resistance and structural integrity are paramount. The combination of 70,000 psi tensile strength and Rockwell B55 hardness ensures reliable fastening in construction, marine, and chemical processing applications. The square neck design prevents rotation during installation, eliminating the need for secondary locking mechanisms and speeding up assembly. With fully threaded UNC coarse threads and Class 2A thread fit, these bolts provide excellent engagement in wood, metal, and composite materials, making them ideal for structural connections, equipment mounting, and machinery assembly where vibration resistance and long-term durability are essential.
Specification Summary & Compliance
This 1/4"-20 UNC carriage bolt features precise Class 2A thread fit with coarse thread spacing, ensuring consistent performance across applications. Manufacturing complies with ASME B18.5 standards for dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial use. Critical dimensions include 0.594" head diameter, 1/2" length, and 0.26" square neck width for secure anti-rotation performance.
