S-90185A159 3/4"-10 x 5" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Grade 5 strength rating and 120,000 psi tensile strength for reliable performance in demanding applications.
• Superior corrosion resistance from the black-oxide steel coating, extending service life in harsh industrial environments.
• Secure anti-rotation design with a square neck that locks into materials during tightening, preventing spin-out.
• Optimized thread engagement through UNC coarse threading and Class 2A fit, ensuring easy installation and robust holding power.
• Wide-rounded head profile distributes clamping force evenly, reducing surface damage and improving joint integrity.
• Full threading along the 5" length provides versatile fastening depth options for various material thicknesses.
• Compliance with major industry standards including ASME B18.5 and SAE J429, guaranteeing consistent quality and interchangeability.

Professional Applications & Engineering Value

This Grade 5 carriage bolt is engineered for heavy-duty structural connections where vibration resistance and long-term reliability are critical. The black-oxide steel construction offers enhanced protection against rust and wear, making it ideal for outdoor machinery, agricultural equipment, and construction frameworks exposed to moisture. The square neck design securely embeds into wood or metal, eliminating the need for additional locking washers and reducing assembly time. With UNC coarse threads and a Class 2A thread fit, it ensures quick installation and maintains clamping force under dynamic loads, addressing common loosening issues in industrial settings. Its full-threaded 5" length accommodates thick assemblies, while the rounded head minimizes snagging hazards in conveyor systems or material handling applications.

Specification Summary & Compliance

This carriage bolt adheres to precise dimensional standards with a Class 2A thread fit and UNC coarse threading (3/4"-10), manufactured in accordance with ASME B18.5 and SAE J429 specifications. It meets regulatory requirements including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and material sustainability. The bolt features a Rockwell C25 hardness and is fully traceable for quality assurance in industrial procurement.