Value Collection 403130PR Hex Head Cap Screw 3/8-16 X 4 in

Product Description

The VALUE COLLECTION 403130PR is a partially threaded hex head cap screw designed for general-purpose fastening in mechanical, structural, and light industrial assemblies. Manufactured from Grade 2 steel with a zinc-plated finish, this fastener measures 3/8-16 thread size with a 4-inch length under the head. The partial threading provides a smooth shank section that resists lateral shear loads in bolted joints. Installed using a 9/16-inch hex wrench or socket, this screw follows Unified National Coarse (UNC) thread standards and is suited for trade professionals working in fabrication, equipment maintenance, and general construction.

This fastener is appropriate for residential and commercial applications where UNC-threaded connections are required in steel, wood, or composite substrates. The zinc plating provides basic corrosion resistance suitable for dry or mildly humid indoor environments. It is commonly used in HVAC equipment assembly, structural bracketing, and mechanical equipment mounting. The 3/8-16 UNC thread pattern is one of the most widely encountered sizes in North American trade work, making this screw a reliable stock item for service vehicles and shop inventory.

Key Features

• Grade 2 steel construction rated for general-purpose fastening applications
• Zinc-plated finish provides basic corrosion resistance for indoor and dry-environment use
• Partially threaded shank improves shear resistance in structural bolted connections
• 3/8-16 UNC thread standard ensures broad compatibility with standard nuts and tapped holes
• 9/16-inch hex drive accepts standard sockets and open-end wrenches
• Inch measurement system with length measured under the head for consistent fitment

Compatibility

Designed for use with standard 3/8-16 UNC nuts, washers, and tapped holes following Unified National Coarse thread specifications. Suitable as a replacement or stock fastener wherever a 3/8-16 x 4-inch partially threaded hex head cap screw is specified.

Installation Notes

Installation is performed with a 9/16-inch socket, combination wrench, or ratchet driver. Always ensure mating nuts or tapped holes conform to 3/8-16 UNC specifications before installation. Torque fasteners in accordance with applicable equipment manufacturer guidelines or recognized fastener standards such as those published by ASME. De-energize and lock out all equipment before replacing fasteners on live mechanical or electrical assemblies.