S-98060A640 3/8"-16 x 3/4" ASTM A307, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction, ideal for outdoor or humid industrial environments
• Secure anti-rotation performance thanks to the knurled neck and wide rounded head design, preventing loosening under vibration
• High tensile strength of 60,000 psi and Grade 2 classification for reliable load-bearing in structural applications
• Easy installation and compatibility with coarse UNC threading and Class 2A fit, ensuring smooth assembly with standard nuts
• Durable material hardness (Rockwell B69) resists wear and deformation, extending service life in heavy-duty use
• Full threading along the 3/4" length provides versatile fastening depth and adjustability for various material thicknesses
• Compliance with industry standards including ASTM A307 and SAE J429, guaranteeing consistent quality and safety

Professional Applications & Engineering Value

This zinc-plated steel carriage bolt is engineered to address common challenges in industrial and construction settings, such as vibration-induced loosening and corrosion. The knurled neck and rounded head work together to lock securely into wood or metal surfaces, eliminating the need for additional washers and reducing maintenance. With a coarse UNC thread and Class 2A fit, it ensures quick, reliable installation in equipment assembly, trailer manufacturing, and structural frameworks. The 60,000 psi tensile strength and Grade 2 rating provide dependable performance under stress, making it a go-to industrial fastener for applications demanding durability and compliance with ASTM A307 and SAE J429 specifications.

Specification Summary & Compliance

This carriage bolt adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and UNC coarse threading (3/8"-16 size). It meets ASTM A307 and SAE J429 specifications for material and mechanical properties, ensuring reliability in fastening applications. Additionally, the product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, supporting environmentally responsible sourcing and use in regulated industries.