Value Collection 403120PR Hex Head Cap Screw 3/8-16 X 2-3/4 in

Product Description

The VALUE COLLECTION 403120PR is a 3/8-16 partially threaded hex head cap screw manufactured from Grade 2 steel with a zinc-plated finish. It measures 2-3/4 inches under the head and uses a Unified National Coarse (UNC) thread form. The zinc coating provides basic corrosion resistance for general indoor and light-duty outdoor fastening applications. This screw is driven with a 9/16-inch hex key or wrench and is suited for use by maintenance technicians, mechanical contractors, and trade professionals requiring a standard inch-series fastener for structural and equipment assembly work.

This fastener is appropriate for general-purpose mechanical assembly, equipment mounting, and structural connections in residential and light commercial trade applications. Grade 2 steel is commonly used in low- to medium-stress applications where high-tensile fasteners are not required. The partial threading allows for a smooth shank section near the head, which is useful when clamping two unthreaded members together. It is a standard inch-series UNC fastener stocked for everyday maintenance and repair tasks across HVAC, plumbing, and electrical trade work.

Key Features

• 3/8-16 UNC thread form for compatibility with standard inch-series nuts and tapped holes
• 2-3/4-inch length under head provides adequate grip for typical mechanical assemblies
• Partially threaded shank allows solid clamping without thread engagement through both members
• Grade 2 steel construction for general-purpose, low- to medium-stress fastening
• Zinc-plated finish offers basic corrosion resistance for dry and light-exposure environments
• 9/16-inch hex drive size compatible with standard wrenches and sockets

Compatibility

Designed as a standard UNC inch-series hex head cap screw suitable for use wherever a 3/8-16 partially threaded fastener is specified in mechanical, HVAC, plumbing, or electrical equipment assembly.

Installation Notes

Installation is performed with a 9/16-inch open-end, box, or socket wrench. Ensure mating nuts or tapped holes are clean and free of debris before driving. Do not over-torque Grade 2 fasteners, as the lower tensile rating makes them more susceptible to yield than Grade 5 or Grade 8 hardware. Follow applicable equipment manufacturer torque specifications and relevant mechanical codes when used in structural or pressure-boundary applications.