S-90185A134 7/16"-14 x 2 1/2" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Superior anti-rotation performance with a square neck design that securely locks into materials, preventing spinning during installation and under vibration.
• High tensile strength of 120,000 psi ensures reliable load-bearing capacity and structural integrity in demanding industrial and construction applications.
• Enhanced corrosion resistance from the black-oxide steel finish, providing durable protection against rust and extending service life in harsh environments.
• Wide rounded head profile offers a larger bearing surface for improved load distribution and reduced risk of surface damage.
• Coarse UNC threading with Class 2A fit allows for faster assembly, easier alignment, and reliable performance in wood and metal applications.
• Grade 5 hardness (Rockwell C25) delivers excellent durability and resistance to wear, shear, and deformation under stress.
• Full threading provides versatile fastening options along the entire bolt length for adjustable grip and secure connections.

Professional Applications & Engineering Value

This Grade 5 carriage bolt is engineered to address common industrial fastening challenges, such as joint loosening due to vibration and material fatigue. The black-oxide steel construction combined with a square neck design ensures that the bolt remains firmly seated, eliminating rotation during torque application and in dynamic environments. Its coarse UNC thread and Class 2A fit facilitate quick installation in wood, metal framing, and structural components, reducing labor time while maintaining precision. Ideal for construction, machinery assembly, and transportation equipment, this bolt provides a robust solution for applications requiring high tensile strength and long-term reliability, supported by compliance with ASME B18.5 standards for consistent quality and performance.

Specification Summary & Compliance

This carriage bolt features precise dimensions including a 7/16"-14 UNC coarse thread with Class 2A thread fit for standard tolerance, a 2 1/2" length, and a square neck measuring 0.25" in length and 0.45" in width. It is manufactured in accordance with ASME B18.5 specifications and meets Grade 5 standards for mechanical properties. Additionally, the product is certified as RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental safety and regulatory adherence for global industrial use.