Value Collection 30580 Hex Head Cap Screw 5/16-18 X 1/2 in 316 Ss

Product Description

The VALUE COLLECTION 30580 is a fully threaded hex head cap screw sized 5/16-18 x 1/2 inches, manufactured from Grade 316 stainless steel with no additional coating. The 5/16-18 designation indicates a 5/16-inch nominal diameter with 18 threads per inch on a Unified National Coarse (UNC) thread form. Full threading along the 1/2-inch length under head maximizes thread engagement in shallow or thin material applications. Grade 316 stainless steel provides elevated corrosion resistance compared to 304-series alloys, making this fastener well suited for wet, chemical, or marine-adjacent environments. Installed by maintenance technicians, plumbers, HVAC service professionals, and general contractors wherever a corrosion-resistant hex fastener is required.

This fastener is used across a wide range of light-duty industrial and trade applications, including equipment panels, pipe hangers, junction box covers, HVAC equipment mounting, and general mechanical assembly where exposure to moisture or mild corrosives is a concern. The 5/16-18 UNC thread is one of the most common coarse-thread sizes in inch-measurement mechanical work, so this screw fits standard hex nuts, coupling nuts, and tapped holes spec'd to that thread profile. The uncoated finish leaves the natural 316 stainless surface exposed for maximum material-to-material contact.

Key Features

• Grade 316 stainless steel construction for superior corrosion resistance in wet or chemically active environments
• 5/16-18 UNC thread form — fully threaded for maximum engagement in thin or shallow tapped holes
• 1/2-inch length under head accommodates thin panel and light-duty structural fastening
• Uncoated finish preserves dimensional accuracy and avoids coating buildup in tapped holes
• Standard hex drive compatible with common 1/2-inch drive and hand-tool wrenching

Compatibility

Designed for use with standard 5/16-18 UNC tapped holes, hex nuts, and coupling nuts in inch-measurement mechanical assemblies requiring Grade 316 stainless steel fasteners.

Installation Notes

Installation requires a standard hex wrench or socket sized for a 5/16-18 hex head cap screw. De-energize or depressurize any equipment before fastening or removing hardware in live systems. Avoid mixing stainless steel fasteners with dissimilar metals in highly conductive or electrolytic environments to reduce galvanic corrosion risk. Apply appropriate anti-seize compound if the fastener will be installed in a high-temperature or frequently serviced location to prevent galling of the stainless threads.