Value Collection R57001120 Hex Head Cap Screw 5/16-18

Product Description

The VALUE COLLECTION R57001120 is a fully threaded hex head cap screw designed for general mechanical and structural fastening applications. Manufactured from 18-8 stainless steel with no additional coating, this fastener offers solid corrosion resistance in moderate-exposure environments. The 5/16-18 UNC thread size and 3/8-inch length under the head make it well suited for light-duty clamping and assembly work where a standard inch-series unified coarse thread is specified. Installed with a standard hex wrench or socket driver, this screw is a reliable choice for maintenance and fabrication crews working across HVAC, plumbing, electrical, and pool equipment applications.

This fastener is appropriate for use in residential and commercial service environments where stainless steel is preferred over zinc-plated or plain steel alternatives. Typical applications include panel assembly, equipment mounting, bracket fastening, and general hardware replacement. The fully threaded shank provides maximum thread engagement over the full 3/8-inch grip length, making it effective for thin-stock assemblies and through-bolt configurations. Trade professionals in HVAC, plumbing, and pool service commonly stock this size for field repairs and equipment installations.

Key Features

• 18-8 stainless steel construction provides corrosion resistance in moisture-exposed environments
• Fully threaded shank maximizes thread engagement across the entire 3/8-inch length under head
• 5/16-18 UNC thread standard ensures compatibility with standard inch-series tapped holes and nuts
• Uncoated finish — no plating that can flake, chip, or introduce galvanic incompatibility with stainless hardware
• Hex drive accepts standard 1/2-inch hex wrenches, sockets, and nut drivers

Compatibility

Designed as a standard inch-series UNC hex head cap screw for use in any application requiring a 5/16-18 thread and 3/8-inch length under head in stainless steel.

Installation Notes

Installation requires a 1/2-inch hex wrench, socket, or nut driver. Power down or de-energize any equipment before fastener service. Avoid mixing stainless steel fasteners with dissimilar metals in highly conductive or saltwater environments without evaluating galvanic compatibility. Do not overtighten — 18-8 stainless fasteners are subject to galling if driven at excessive speed or torque without appropriate lubrication.