Value Collection VS1064PR Hex Cap Screw 5/16-18 X 7/8 in Silicon

Product Description

The VALUE COLLECTION VS1064PR is a fully threaded hex head cap screw designed for fastening applications that require corrosion resistance in marine, wet, or chemically exposed environments. Manufactured from silicon bronze alloy grade C651, this fastener offers strong resistance to saltwater and atmospheric corrosion without the need for a protective coating. The bright, uncoated finish is ready for installation as received. Sized at 5/16-18 UNC thread with a 7/8-inch length under head, it meets ASME B18.2.1 dimensional standards. Plumbers, marine contractors, electricians, and industrial mechanics commonly specify silicon bronze hardware where galvanic compatibility or corrosion resistance is a primary concern.

This hex head cap screw is suited for residential and commercial installations involving copper or bronze fittings, marine-grade assemblies, outdoor structural connections, and wet-area mechanical assemblies. The UNC thread form makes it compatible with standard inch-series tapped holes and hex nuts. The 1/2-inch hex drive accommodates standard hex wrenches and sockets, allowing installation in confined spaces or open assemblies alike. Applications span plumbing fixture mounting, electrical panel supports, pool equipment frames, and general mechanical assembly where ferrous fasteners would be subject to corrosion.

Key Features

• Silicon bronze C651 material provides excellent corrosion resistance in marine and wet environments
• Fully threaded 5/16-18 UNC for maximum thread engagement in through-hole applications
• Meets ASME B18.2.1 dimensional standards for consistent fitment
• Bright, uncoated finish — no stripping risk from coating buildup in threaded holes
• 1/2-inch hex head size compatible with standard wrenches and sockets
• No plating or coating means no risk of galvanic incompatibility with copper or bronze mating parts

Compatibility

Designed as an OEM-style replacement or general-use fastener for any application requiring a 5/16-18 UNC fully threaded hex head cap screw in silicon bronze, conforming to ASME B18.2.1.

Installation Notes

Installation is performed by hand-starting the screw into a properly tapped or clearance hole before driving to torque with a standard hex wrench or socket. Power down and de-energize any electrical or mechanical system before fastener replacement. Silicon bronze is a softer alloy than steel — avoid impact drivers at full power, which can damage threads or head faces. Follow applicable mechanical or structural codes for the trade and application.