S-93548A603 5/16"-18 x 5" 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, preventing spinning during installation and ensuring stable, reliable connections in wood and metal applications.
• 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 delivers reliable load-bearing capacity for medium-duty structural and machinery applications.
• Optimized Thread Engagement - Fully threaded UNC coarse pattern with Class 2A fit ensures easy installation and consistent clamping force across the entire bolt length.
• Wide Application Compatibility - Rounded carriage head design distributes pressure evenly while the 5" length accommodates various material thicknesses in construction and equipment assembly.
• Industry Standard Compliance - Meets ASTM A307, SAE J429, and ASME B18.5 specifications, guaranteeing consistent quality and dimensional accuracy for professional applications.
• Environmental Responsibility - RoHS 3 compliance ensures safe, environmentally conscious manufacturing without restricted hazardous substances.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these carriage bolts combine zinc-plated steel durability with critical anti-rotation features that solve common fastening challenges. The square neck design bites securely into materials, eliminating the need for additional locking mechanisms in wood-to-metal connections and structural frameworks. With Rockwell B70 hardness and 60,000 PSI tensile strength, these Grade 2 fasteners maintain integrity under vibration and load stress in equipment manufacturing, trailer assembly, and construction projects. The fully threaded UNC coarse pattern ensures rapid installation while providing maximum thread engagement across the entire 5" length, making them ideal for applications requiring consistent clamping pressure through varying material thicknesses.

Specification Summary & Compliance

This carriage bolt features precision 5/16"-18 UNC coarse threads with Class 2A thread fit tolerance for reliable engagement. Manufactured to ASTM A307 specifications with additional compliance to SAE J429 Grade 2 and ASME B18.5 dimensional standards. The product meets RoHS 3 (2015/863/EU) environmental compliance requirements, ensuring responsible manufacturing practices for global industrial applications.