Value Collection R99048893 Hex Cap Screw 5/16-18 X 1/2 in 316 Ss

Product Description

The VALUE COLLECTION R99048893 is a fully threaded hex head cap screw in a 5/16-18 UNC thread size with a 1/2 inch length under head. Manufactured from Grade 316 stainless steel with no surface coating, this fastener is built for corrosive and high-moisture environments where standard carbon steel hardware would fail. It conforms to DIN 933, the international standard for fully threaded hex bolts. Typical installers include licensed plumbers, pipefitters, HVAC mechanics, and marine service technicians who need reliable corrosion resistance in their fastener selection.

This fastener is suited for use in wet, chemical-exposure, or outdoor environments including plumbing system connections, HVAC equipment mounting, pool and spa equipment assemblies, and marine hardware applications. The 5/16-18 UNC thread pattern is a common size in residential and light commercial mechanical systems. Grade 316 stainless steel provides greater chloride and salt resistance compared to Grade 304, making it a preferred choice in coastal installations, pool equipment rooms, and chemical process environments.

Key Features

• Grade 316 stainless steel construction for superior corrosion resistance in harsh environments
• Fully threaded per DIN 933 standard for maximum thread engagement across the full shank
• 5/16-18 UNC thread for compatibility with standard inch-series nuts and tapped holes
• Uncoated finish eliminates coating delamination concerns in wet or submerged conditions
• 1/2 inch length under head suits tight-clearance installations common in HVAC and plumbing assemblies

Compatibility

Designed as a standard inch-series hex head cap screw for use with 5/16-18 UNC tapped holes, nuts, and threaded inserts across residential and commercial mechanical, plumbing, and pool equipment applications.

Installation Notes

Install with a standard hex wrench or socket driver sized for a 5/16-18 fastener. Ensure mating threads are clean and free of debris before installation. In stainless-to-stainless applications, apply an anti-galling lubricant or thread compound to prevent thread galling under torque. Power down or de-energize any equipment being serviced before accessing fastened components.