Value Collection 403072PR Hex Head Cap Screw 5/16-18 X 2-1/2 in

Product Description

The VALUE COLLECTION 403072PR is a partially threaded hex head cap screw designed for general-purpose mechanical fastening in industrial, construction, and maintenance applications. Built from Grade 2 steel with a zinc-plated finish, this screw measures 5/16-18 UNC thread size with a 2.5-inch length under the head. The zinc coating provides basic corrosion resistance for indoor and light outdoor use. It is driven with a 1/2-inch hex key or standard hex head wrench and is suitable for use wherever a UNC-standard fastener is required. Installers across multiple trades use this fastener for equipment mounting, bracket installation, and structural assembly.

This cap screw is appropriate for residential and light commercial applications where Grade 2 steel meets load requirements. The partial threading allows the unthreaded shank to bear shear loads and align components before thread engagement begins. Typical uses include equipment frames, ductwork supports, electrical panel brackets, and general mechanical assemblies. The UNC thread form is the standard for inch-system fasteners in North American trade work.

Key Features

• 5/16-18 UNC thread provides a widely compatible inch-standard thread form
• Partial threading allows shank to carry shear load and aid component alignment
• Grade 2 steel construction suits general-purpose fastening applications
• Zinc-plated finish offers basic corrosion resistance for light-duty environments
• 1/2-inch hex head fits standard wrenches and sockets
• 2.5-inch length under head accommodates moderate material stack-ups

Compatibility

Designed as a standard inch-system hex head cap screw compatible with any application requiring a 5/16-18 UNC partially threaded fastener per standard inch-measurement specifications.

Installation Notes

Installation requires a 1/2-inch wrench, ratchet, or socket driver. Power down or de-energize any equipment before fastening hardware in or near electrical or mechanical systems. Always verify that Grade 2 steel meets the load, torque, and environmental requirements specified for the application before installation. Do not use in high-stress, high-vibration, or corrosive environments where a higher-grade or more corrosion-resistant fastener is required.