S-93548A722 1/2"-13 x 2 1/2" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
• Enhanced load distribution from the wide rounded head design, minimizing surface damage during installation
• Secure anti-rotation locking provided by the integrated square neck, preventing bolt spinning during nut tightening
• Reliable coarse threading with UNC Class 2A fit ensures quick assembly and vibration resistance in structural applications
• High tensile strength rating of 60,000 psi (Grade 2) delivers dependable performance under substantial loads
• Full threading capability allows for maximum adjustability and versatility across various material thicknesses
• Industry-standard compliance with multiple specifications guarantees consistent quality and interchangeability

Professional Applications & Engineering Value

This zinc-plated steel carriage bolt delivers exceptional engineering value through its specialized design features. The square neck integrated beneath the rounded head provides critical anti-rotation properties, eliminating the need for secondary locking mechanisms during assembly in wood-to-metal and structural steel connections. The UNC coarse thread pattern with Class 2A fit ensures rapid installation in construction frameworks, agricultural equipment, and trailer manufacturing where vibration resistance is paramount. The zinc plating surface treatment offers reliable corrosion protection for outdoor applications and industrial environments exposed to moisture. With Grade 2 strength classification and 60,000 psi tensile strength, this fully threaded fastener maintains structural integrity in heavy-duty applications including bridge decking, material handling systems, and commercial vehicle assemblies.

Specification Summary & Compliance

This carriage bolt maintains precise Class 2A thread fit tolerances with UNC 1/2"-13 coarse threading and right-hand thread direction. Manufacturing compliance includes ASTM A307, SAE J429 Grade 2, and ASME B18.5 dimensional standards. The fastener demonstrates Rockwell B70 hardness and meets RoHS 3 (2015/863/EU) environmental compliance requirements for restricted substances.