S-93548A896 3/4"-10 x 4 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, ideal for outdoor and harsh industrial environments
• Exceptional holding power with Grade 2 strength rating and 60,000 psi tensile strength for reliable load-bearing applications
• Secure anti-rotation design featuring a square neck that prevents spinning during installation in wood and metal assemblies
• Easy installation and removal with coarse UNC threading and Class 2A thread fit for quick assembly in various materials
• Enhanced durability with Rockwell B70 hardness, maintaining structural integrity under repeated stress and vibration
• Broad compatibility with rounded carriage head design accommodating standard wrenches and providing finished appearance
• Regulatory compliance assurance meeting ASTM A307, SAE J429, and ASME B18.5 standards for quality and safety

Professional Applications & Engineering Value

This heavy-duty carriage bolt delivers critical engineering solutions where vibration resistance and structural integrity are paramount. The zinc-plated steel construction provides essential corrosion protection for outdoor construction, agricultural equipment, and industrial machinery exposed to moisture and chemicals. The square neck design mechanically locks into materials during installation, eliminating rotation and ensuring permanent alignment in wood-to-metal connections and structural framing. With 3/4"-10 UNC coarse threading and Class 2A thread fit, these bolts offer superior grip in soft materials and faster installation compared to fine-thread alternatives. The combination of 60,000 psi tensile strength and Rockwell B70 hardness makes these fasteners ideal for demanding applications in trailer manufacturing, bridge construction, and heavy equipment assembly where reliability cannot be compromised.

Specification Summary & Compliance

This carriage bolt features precision 3/4"-10 UNC coarse threads with Class 2A tolerance for consistent fit and performance. Manufacturing complies with ASTM A307 specifications for low carbon steel structural bolts, SAE J429 for mechanical properties, and ASME B18.5 for dimensional standards. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental responsibility and workplace safety compliance.