S-90185A156 3/4"-10 x 2" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Grade 5 classification and 120,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance provided by the black-oxide steel coating, extending service life in various environmental conditions
• Non-rotating installation security through the integrated square neck design that prevents spinning during tightening
• Maximum thread engagement with fully threaded UNC coarse threading for superior holding power and faster assembly
• Optimized head design featuring a wide, rounded carriage head that distributes clamping force evenly and resists pull-through
• Precise dimensional consistency with Class 2A thread fit ensuring compatibility with standard nuts and components
• Enhanced durability from Rockwell C25 hardness that maintains structural integrity under repeated stress

Professional Applications & Engineering Value

These Grade 5 carriage bolts deliver critical engineering solutions for industrial fastening challenges where vibration resistance and structural integrity are paramount. The black-oxide steel construction provides essential corrosion protection for outdoor equipment, agricultural machinery, and construction applications exposed to environmental elements. The square neck design fundamentally solves rotation issues during installation, making them ideal for wood-to-metal connections, trailer assemblies, and structural framing where non-rotating security is essential. With fully threaded UNC coarse threading, these bolts offer maximum thread engagement in various materials while the rounded carriage head prevents surface damage and provides a finished appearance. Their 120,000 psi tensile strength makes them suitable for heavy-duty applications across manufacturing, transportation, and infrastructure projects.

Specification Summary & Compliance

This 3/4"-10 carriage bolt features precise Class 2A thread fit with UNC coarse threading and right-hand thread direction. Manufactured to meet ASME B18.5 and SAE J429 specifications for dimensional accuracy and performance standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors. Critical dimensions include 2" length, 1.594" head diameter, and 0.77" square neck width for secure anti-rotation performance.