S-93548A656 3/8"-16 x 10" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior Anti-Rotation Performance: Square neck design securely locks into materials during tightening, preventing bolt spin and ensuring reliable installation in wood and metal assemblies.
• Enhanced Corrosion Resistance: Zinc-plated steel construction provides durable protection against rust and environmental exposure, extending service life in demanding industrial conditions.
• High Tensile Strength: Grade 2 classification with 60,000 PSI tensile strength ensures reliable load-bearing capacity for structural and heavy-duty applications.
• Optimized Thread Engagement: Partially threaded UNC coarse threading allows for efficient installation and secure fastening in various material thicknesses.
• Wide Application Compatibility: Rounded carriage head with wide profile distributes clamping force effectively while preventing surface damage in wood and soft materials.
• Precision Manufacturing: Class 2A thread fit guarantees consistent threading quality and smooth assembly with standard nuts and components.
• Material Hardness Assurance: Rockwell B70 hardness rating maintains structural integrity under vibration and dynamic loading conditions.

Professional Applications & Engineering Value

These zinc-plated steel carriage bolts deliver exceptional engineering value through their specialized square neck anti-rotation feature, which solves critical installation challenges in wood-to-metal and structural framing applications. The partially threaded 3/8"-16 UNC coarse threading provides optimal grip length control while the rounded carriage head prevents pull-through in softer materials. Engineered with Grade 2 strength classification and 60,000 PSI tensile strength, these fasteners withstand substantial mechanical stress in construction, agricultural equipment, and industrial machinery. The zinc plating offers reliable corrosion protection for both indoor and outdoor environments, while the 10" length accommodates thick assembly requirements across multiple industries including transportation infrastructure and heavy equipment manufacturing.

Specification Summary & Compliance

This carriage bolt features precise Class 2A thread fit with UNC coarse threading (3/8"-16) and meets rigorous manufacturing standards including ASTM A307, SAE J429, and ASME B18.5. The fastener demonstrates full compliance with environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring suitability for global industrial markets. Manufactured in the inch system with consistent dimensional accuracy, these bolts provide reliable performance in accordance with established engineering specifications and quality requirements.