Value Collection R57001044 Hex Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION R57001044 is a hex socket cap screw designed for fastening applications that require a recessed drive and reliable clamping force. It features a 5/16-18 UNC thread and a 7-inch length under the head, making it suitable for deep-reach or through-bolt installations. The 1/4-inch hex drive socket head accepts a standard hex key or Allen wrench. Constructed from 18-8 stainless steel with a bright uncoated finish, it provides solid corrosion resistance in moderate-exposure environments. Machinists, millwrights, maintenance technicians, and mechanical contractors are the primary installers of this hardware.

This screw is appropriate for general industrial, mechanical, and structural fastening applications where a flush or countersunk hex socket drive is preferred over an external hex head. The 5/16-18 UNC coarse thread provides good thread engagement in standard tapped holes and is a widely used size in light machinery, equipment frames, enclosures, and brackets. The 7-inch under-head length accommodates thicker assemblies or stacked material configurations that shorter socket screws cannot reach.

Key Features

• 5/16-18 UNC coarse thread for reliable engagement in standard tapped holes
• 7-inch length under head for deep-reach and through-bolt applications
• 1/4-inch hex socket drive compatible with standard hex keys and bit drivers
• 18-8 stainless steel construction for corrosion resistance in moderate environments
• Bright uncoated finish with no plating or treatment that could affect dimensional tolerances

Compatibility

Designed as a standard 5/16-18 UNC hex socket cap screw compatible with any application requiring this thread size, drive type, and length under head in 18-8 stainless steel.

Installation Notes

Installation requires a 1/4-inch hex key or compatible socket bit driver. Ensure the mating tapped hole is clean, correctly sized for 5/16-18 UNC thread, and free of debris before driving. Power down or de-energize any equipment being serviced before fastener replacement or installation. Do not exceed the torsional limits of 18-8 stainless steel fasteners, as over-torquing can cause galling or thread shear.