Value Collection 216239MSC Carriage Bolt 1/2-13 4-1/2 in Grade 8

Product Description

The VALUE COLLECTION 216239MSC is a Grade 8 alloy steel carriage bolt designed for high-strength fastening applications. It features a 1/2-13 UNC thread and a 4.5-inch length under head with full threading along the entire shank. The square neck under the domed head resists rotation during installation without requiring a wrench on the bolt itself. A clear zinc chromate finish provides basic corrosion resistance. This bolt meets SAE J429 standards and is appropriate for structural assemblies, equipment mounting, and heavy-duty mechanical connections where Grade 8 tensile strength is required.

This carriage bolt is suited for use in industrial, agricultural, construction, and heavy equipment applications where a flush, snag-free head profile is needed on one side of the joint. The fully threaded shank allows maximum thread engagement across a range of material thicknesses. It is typically installed by mechanical contractors, millwrights, equipment technicians, and general tradespeople working with structural steel, wood, or heavy fabrications requiring high-clamp-load fasteners.

Key Features

• Grade 8 alloy steel construction for high tensile and proof load strength
• 1/2-13 UNC fully threaded shank for maximum thread engagement
• 4.5-inch length under head accommodates thicker material stacks
• Square neck under domed head prevents bolt rotation during nut tightening
• Clear zinc chromate finish for basic corrosion protection
• Meets SAE J429 fastener standard

Compatibility

Designed as a standard UNC carriage bolt for use with 1/2-13 nuts and matching hardware in inch-measurement fastening systems requiring Grade 8 alloy steel strength.

Installation Notes

Installation requires a standard 1/2-13 hex nut and appropriate wrench. Insert the bolt through the material so the square neck seats into the hole to prevent rotation, then torque the nut from the opposite side. Power down or de-energize any equipment before fastening into or near live assemblies. Follow applicable structural and mechanical codes for joint design and fastener torque specifications appropriate to the application.