Value Collection R63640442 Carriage Bolt 3/8-16 2in Ss

Product Description

The VALUE COLLECTION R63640442 is a 3/8-16 carriage bolt with a 2-inch length under head, designed for secure fastening in applications that require a smooth, rounded head profile with a non-turning square neck. Constructed from Grade 18-8 stainless steel with an uncoated finish, this bolt resists corrosion and oxidation in wet or chemically active environments. The square neck seats into a corresponding hole to prevent rotation during nut tightening, eliminating the need for a tool on the bolt head. This fastener is specified by maintenance technicians, structural trades, and general contractors where stainless steel material compliance is required.

This carriage bolt is suited for residential and light commercial construction, woodworking connections, dock and marine framing, and mechanical assemblies where corrosion resistance is a priority. The UNC thread standard ensures wide compatibility with standard 3/8-16 nuts and washers. The uncoated finish makes this bolt appropriate where coatings could introduce contamination concerns or where raw stainless steel surface properties are required by specification.

Key Features

• Grade 18-8 stainless steel construction for corrosion resistance in wet and outdoor environments
• 3/8-16 UNC thread standard for compatibility with standard nuts and hardware
• 2-inch length under head for medium-depth fastening applications
• Square neck design prevents bolt rotation during tightening without a secondary tool
• Uncoated finish — no added plating or surface treatment

Compatibility

Designed as a standard 3/8-16 UNC carriage bolt compatible with any 3/8-16 hex nut and appropriately sized flat or fender washer in inch-measure fastener applications.

Installation Notes

Install by inserting the bolt through a pre-drilled hole sized to allow the square neck to seat flush and resist rotation. Hand-thread the nut, then tighten with a standard wrench or socket — no tool is required on the bolt head once the neck is seated. Follow applicable structural or mechanical codes when used in load-bearing connections. Inspect threads and seating surfaces before installation to confirm no damage that could compromise clamping force.