Value Collection R40681226 Hex Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION R40681226 is a hex socket cap screw designed for fastening applications that demand corrosion resistance and consistent clamping force. Built from 18-8 stainless steel, this screw measures 2-1/4 inches in length under the head and is threaded to a 5/16-18 UNC specification. Drive engagement is achieved with a 1/4-inch hex (Allen) key. The 18-8 alloy grade provides solid resistance to oxidation and mild chemical exposure, making it a practical choice in wet, outdoor, or sanitary environments where carbon steel fasteners would corrode prematurely.

This cap screw is suited for mechanical assemblies, structural bracketing, and equipment maintenance across plumbing, HVAC, electrical, and pool service trades. Its UNC thread form is the standard coarse-pitch designation used throughout North American mechanical systems, making it straightforward to source matching nuts and threaded inserts. The socket drive style allows installation in confined spaces where a wrench cannot swing a full arc, a common condition in tight equipment panels and structural channel work.

Key Features

• 18-8 stainless steel construction resists corrosion in wet and outdoor environments
• 5/16-18 UNC coarse thread for broad compatibility with standard North American fastener hardware
• 2-1/4-inch length under head suits medium-depth through-bolt and tapped-hole applications
• 1/4-inch hex socket drive allows installation in restricted-access locations
• Socket cap head style provides a low-profile, clean finish on exposed assemblies

Compatibility

Designed as a standard 5/16-18 UNC hex socket cap screw for use in any application requiring a 5/16-18 coarse-thread fastener with a 1/4-inch hex drive and a 2-1/4-inch length under head.

Installation Notes

Install and remove using a 1/4-inch hex key or Allen driver; impact-rated hex bits are acceptable for power-tool installation. Apply appropriate anti-seize compound when installing stainless fasteners into stainless or aluminum tapped holes to prevent galling. Verify thread engagement depth meets at least 1.5 times the screw diameter in tapped holes before applying final torque. Follow applicable mechanical codes and equipment manufacturer torque specifications for the assembly being serviced.