S-93180A270 1/4"-20 x 4 1/2" ASME B18.5 Carriage Bolts

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 ensures reliable performance under heavy loads
• Secure anti-rotation locking provided by the integrated square neck design
• Wide bearing surface from the rounded carriage head distributes load effectively
• Precise Class 2A thread fit guarantees smooth assembly and consistent fastening
• Full threading along 4-1/2" length offers versatile positioning and maximum grip
• Compliance with major regulations including RoHS 3 and REACH for safe industrial use

Professional Applications & Engineering Value

This 316 stainless steel carriage bolt delivers exceptional value in demanding industrial settings where corrosion resistance and structural integrity are paramount. The UNC coarse thread and Class 2A fit enable quick installation in wood, metal, and composite materials, while the square neck prevents rotation during tightening - eliminating the need for secondary locking mechanisms. With 70,000 psi tensile strength and Rockwell B55 hardness, it withstands vibration and dynamic loads in construction, marine, and chemical processing applications. The fully threaded design provides maximum engagement depth, making it ideal for variable material thicknesses in heavy equipment, transportation, and infrastructure projects.

Specification Summary & Compliance

This carriage bolt features a 1/4"-20 UNC coarse thread with Class 2A thread fit per ASME standards, ensuring precise dimensional accuracy and reliable performance. Manufactured to ASME B18.5 specifications with complete RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, meeting the latest environmental and safety regulations for industrial fasteners.