S-93548A673 7/16"-14 x 1 1/2" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc plating for reliable performance in various industrial environments
• Superior anti-rotation security due to the square neck design that prevents spinning during installation
• High tensile strength of 60,000 PSI ensures dependable load-bearing capacity for heavy-duty applications
• Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
• Easy installation and removal with fully threaded UNC coarse pattern and right-hand thread direction
• Precise thread fit (Class 2A) guarantees smooth assembly and reliable fastening in demanding conditions
• Wide rounded head profile offers increased bearing surface for secure clamping and reduced surface damage

Professional Applications & Engineering Value

This Grade 2 zinc-plated steel carriage bolt is engineered to address common challenges in structural and machinery applications where vibration resistance and long-term reliability are critical. The square neck design effectively locks into materials, preventing rotation during torque application and ensuring stable connections in wood-to-metal and heavy timber constructions. With its UNC coarse threading and fully threaded shank, it facilitates quick assembly in agricultural equipment, trailer manufacturing, and construction frameworks. The zinc-plated finish provides a protective barrier against rust and corrosion, extending service life in outdoor or humid environments. Its combination of 60,000 PSI tensile strength and Rockwell B70 hardness makes it ideal for load-bearing joints that require consistent performance under stress, reducing maintenance needs and downtime in industrial operations.

Specification Summary & Compliance

This carriage bolt features a 7/16"-14 UNC coarse thread with Class 2A thread fit for standard tolerance and easy assembly. It complies with ASTM A307, SAE J429, and ASME B18.5 specifications, ensuring consistent manufacturing quality and dimensional accuracy. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental regulations for hazardous substance restrictions.