Value Collection R40681444 Hex Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION R40681444 is a hex socket cap screw designed for fastening applications that require a recessed Allen-style drive. Threaded to 5/16-18 UNC, it seats flush or low-profile against mated surfaces using a standard 1/4 inch hex key. The 3/8 inch length under head keeps the fastener compact for assemblies with limited clearance. Manufactured from 18-8 stainless steel, the screw resists corrosion in wet, outdoor, and mildly chemical environments. Machinists, pipefitters, millwrights, and maintenance technicians across HVAC, plumbing, and general mechanical trades rely on this screw type for panel, bracket, and equipment-frame fastening.

This screw suits residential and light commercial applications where a standard UNC coarse-thread fastener is required and corrosion resistance is a priority. The 5/16-18 UNC thread is a widely used coarse-thread specification compatible with standard tapped holes and nuts of the same designation. Its compact 3/8 inch under-head length makes it appropriate for thin-material assemblies, access panels, and equipment enclosures where longer fasteners would bottom out or protrude.

Key Features

• 5/16-18 UNC coarse thread for broad compatibility with standard tapped holes and hardware
• 3/8 inch length under head suits shallow assemblies and thin-material applications
• 1/4 inch hex socket drive accepts standard Allen keys and hex-bit drivers
• 18-8 stainless steel construction provides corrosion resistance in wet and outdoor environments
• Low-profile cap head design minimizes protrusion above mating surfaces

Compatibility

Designed as an OEM-style replacement or standard-stock fastener for any assembly requiring a 5/16-18 UNC hex socket cap screw with a 3/8 inch under-head length.

Installation Notes

Installation requires a 1/4 inch hex key or Allen-bit driver. Ensure the mating tapped hole or nut is clean and free of debris before threading. Do not overtighten stainless steel fasteners, as the material is susceptible to galling; applying an anti-seize compound to the threads is standard practice. Follow applicable mechanical codes and equipment manufacturer torque guidelines for the assembly being serviced.