Value Collection 3TBT905C0300 Hex Cap Screw 5/16-18 X 3 in 316 Ss

Product Description

The VALUE COLLECTION 3TBT905C0300 is a fully threaded hex head cap screw designed for fastening applications that demand corrosion resistance and dimensional precision. Manufactured from Grade 316 stainless steel with a bright, uncoated finish, this fastener features a 5/16-18 UNC thread size and a 3-inch length measured under the head. The fully threaded shank provides maximum thread engagement across the full usable length, making it suitable for through-bolt configurations and applications where a nut is threaded from the opposite end. Licensed trades and industrial maintenance personnel working in corrosive or wet environments rely on 316 stainless fasteners for long-term joint integrity.

This fastener is well suited for use in plumbing, HVAC, marine, pool and spa, and other installations where exposure to moisture, chemicals, or salt air is a concern. Grade 316 stainless steel offers improved chloride resistance compared to Grade 304, making it a preferred choice for coastal, chemical-processing, and aquatic equipment installations. It is appropriate for both light structural and mechanical fastening tasks where a standard hex head and UNC thread form are specified.

Key Features

• Grade 316 stainless steel construction for superior corrosion resistance in wet and chemical environments
• Fully threaded shank along the full 3-inch length under head for maximum thread engagement
• 5/16-18 UNC thread standard for compatibility with standard inch-series nuts, inserts, and tapped holes
• Bright, uncoated finish eliminates concerns about coating delamination or galvanic interaction with coatings
• Hex head drive accepts standard hex wrenches and sockets found in every trade toolkit

Compatibility

Designed as an OEM-style and general-use replacement or new-installation fastener for any application specifying a 5/16-18 UNC fully threaded hex head cap screw in Grade 316 stainless steel.

Installation Notes

Installation is performed by mechanical and maintenance trades using standard hex wrenches, sockets, or nut drivers sized for a 5/16-inch hex head cap screw. De-energize and depressurize any system before disassembling fastened joints. Apply an anti-seize compound rated for stainless steel fasteners to reduce the risk of galling during installation and future removal. Torque to the value specified by the equipment manufacturer or the applicable industry standard for the joint type and material being fastened.