S-98060A360 5/16"-18 x 1 1/2" ASTM A307, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Superior anti-rotation performance thanks to the knurled neck design, preventing the bolt from turning during tightening in wood or metal applications.
• Excellent corrosion resistance provided by the zinc-plated steel construction, extending the fastener's service life in various environments.
• High tensile strength of 60,000 PSI and Rockwell B69 hardness for reliable performance in demanding, heavy-duty assemblies.
• Wide, rounded carriage head distributes load effectively and sits flush, reducing surface damage and improving safety.
• Coarse UNC threading with Class 2A fit ensures easy, quick installation and robust holding power.
• Full threading along the 1-1/2" length offers maximum flexibility for use with a wide range of material thicknesses and nut positions.
• Compliance with major industry standards including ASTM A307 and SAE J429, guaranteeing consistent quality and interchangeability.

Professional Applications & Engineering Value

This Grade 2 zinc-plated steel carriage bolt is engineered to solve common fastening challenges in construction, agricultural machinery, and structural wood assemblies. The knurled neck beneath the wide, rounded head bites into the material, providing critical anti-rotation security without the need for a separate locking mechanism. This feature is invaluable when securing components where only one side is accessible for tightening. Made from zinc-plated steel, it resists rust and corrosion, making it suitable for both indoor and outdoor applications. The fully threaded design with a coarse 5/16"-18 UNC thread allows for deep engagement and high clamp force, ensuring your assemblies remain secure under vibration and load stress. It is the go-to heavy-duty fastener for projects demanding reliability and ease of installation.

Specification Summary & Compliance

This carriage bolt features a 5/16"-18 UNC thread with a Class 2A fit for standard tolerance and easy assembly. It is manufactured to meet ASTM A307 and SAE J429 Grade 2 specifications, ensuring a tensile strength of 60,000 PSI. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances and safe for use in regulated markets.