Value Collection 86853421 Hex Cap Screw 3/8-16 X 2-1/2 in Grade 8

Product Description

The VALUE COLLECTION 86853421 is a Grade 8 steel hex head cap screw with a 3/8-16 UNC thread and a 2-1/2-inch length under head. It features partial threading and a zinc-plated finish that provides a baseline level of corrosion resistance for general fastening applications. Grade 8 is a high-strength designation, making this fastener appropriate for mechanically demanding joints where a standard Grade 5 would be insufficient. The zinc plating helps resist oxidation in dry and mildly humid environments. This screw ships in a package quantity of 10 and is sold in multiples of 1.

This hex cap screw is suited for use in mechanical assemblies, equipment mounting, structural brackets, and general maintenance across HVAC, plumbing, electrical, and industrial trade applications. The 3/8-16 UNC thread is one of the most common coarse-thread sizes in North American trade work, meaning compatible nuts, threaded inserts, and tapped holes are widely available. Partial threading allows for a grip length on unthreaded shaft sections, which is preferred in applications where clamping force and shear resistance are priorities over full thread engagement.

Key Features

• Grade 8 high-strength steel construction for demanding mechanical joints
• 3/8-16 UNC coarse thread — widely compatible with standard nuts and tapped holes
• 2-1/2-inch length under head with partial threading for shear-load applications
• Zinc-plated finish for baseline corrosion and oxidation resistance
• Packaged in quantities of 10 for bench stock and field service use

Compatibility

Designed for use with any standard 3/8-16 UNC hex nut, flat washer, lock washer, or tapped hole conforming to Unified National Coarse thread standards.

Installation Notes

Installation requires a standard hex wrench, socket, or box-end wrench sized for a 3/8-inch hex cap screw head. Always de-energize equipment and relieve any system pressure before fastening or removing hardware in live assemblies. Do not exceed the torque specifications listed by the equipment manufacturer for the application. Grade 8 fasteners should not be substituted with lower-grade hardware when replacing in a Grade 8-specified joint.