Value Collection KP44034 5/16-18 X 4-1/2 in Grade 8 Hex Cap Screw

Product Description

The VALUE COLLECTION KP44034 is a Grade 8 steel hex head cap screw sized 5/16-18 x 4-1/2 inches, finished with a zinc-plated coating for corrosion resistance. This fastener features Unified National Coarse (UNC) threading and is partially threaded along its shank length. It meets ASTM A354 BD standards, indicating high tensile strength suitable for structural and mechanical applications. The hex drive head accepts standard hex wrenches and impact tools used daily by mechanical contractors, HVAC installers, electricians, and plumbers when securing equipment, brackets, housings, and structural assemblies.

This screw is appropriate for a wide range of trade and industrial fastening tasks including equipment mounting, mechanical assembly, and structural connections where high-strength fasteners are required. Partially threaded shanks provide clamping force across thicker material stacks without thread engagement through the full grip length. Sold in a package quantity of 25 pieces, making it practical for service vehicles, job-site kits, or shop stock replenishment. Applications span residential and light commercial mechanical, electrical, and plumbing installations wherever Grade 8 UNC hardware is specified.

Key Features

• Grade 8 steel construction meets ASTM A354 BD for high tensile and proof load strength
• Zinc-plated finish provides baseline corrosion protection in indoor and sheltered environments
• Partially threaded shank allows full clamping force on thicker material joints
• 5/16-18 UNC thread is a widely stocked standard size compatible with common nuts and tapped holes
• Hex head drive accepts standard wrenches and socket sets used in trade work
• Package of 25 pieces supports job-site and service stock needs

Compatibility

Designed as a standard 5/16-18 UNC hex head cap screw suitable for use with any 5/16-18 threaded nut or tapped hole requiring Grade 8 fastener strength per ASTM A354 BD.

Installation Notes

Install using a correctly sized hex wrench or socket to avoid rounding the head. Ensure mating threads and tapped holes are clean and free of debris before installation. Do not exceed the torque capacity of the mating material, particularly when threading into aluminum or cast housings. Follow applicable mechanical and structural codes for fastener selection and installation in your jurisdiction.