Value Collection R88448830 Hex Head Cap Screw 5/8-11x16

Product Description

The VALUE COLLECTION R88448830 is a partially threaded hex head cap screw designed for heavy-duty fastening applications where corrosion resistance is a priority. Manufactured from 18-8 stainless steel with an uncoated finish, this fastener measures 5/8-11 thread size with a 16-inch length under head, following the Unified National Coarse (UNC) thread standard. The partial threading provides a smooth shank section that resists loosening under vibration and allows precise clamping loads across thick material stacks. Installers in mechanical, plumbing, and industrial trades reach for this fastener when stainless corrosion resistance is required on structural connections, equipment mounts, or utility infrastructure.

This screw is suited for residential and commercial applications where exposure to moisture, chemicals, or outdoor conditions demands a non-reactive fastener material. Typical install scenarios include HVAC equipment mounting, pump and bracket assemblies, plumbing fixture framing, and general structural fastening in corrosive environments. The 5/8-11 UNC thread pattern is a standard size widely used across trade hardware, making it compatible with a broad range of hex nuts, lock nuts, and threaded inserts of matching specification.

Key Features

• 18-8 stainless steel construction provides strong resistance to rust, oxidation, and corrosive environments
• Partially threaded shank prevents thread engagement across the full grip length, improving clamping strength and vibration resistance
• 5/8-11 UNC thread standard ensures wide compatibility with matching stainless or steel hex nuts and threaded hardware
• 16-inch length under head accommodates deep material stacks and long-reach fastening applications
• Uncoated finish maintains dimensional accuracy and avoids coating degradation in chemical or high-humidity environments
• Inch measurement system throughout — thread size, length, and pitch all expressed in standard US inch dimensions

Compatibility

Designed for use with 5/8-11 UNC threaded hardware including hex nuts, coupling nuts, and threaded inserts rated for 18-8 stainless steel fasteners in standard inch-dimensioned assemblies.

Installation Notes

Installation is typically performed by mechanical, plumbing, or HVAC tradespeople using a properly sized hex wrench or socket driver. Always confirm the mating nut or threaded hole uses the same 5/8-11 UNC thread specification before assembly. Avoid mixing stainless steel fasteners with dissimilar metals in submerged or high-conductivity environments to prevent galvanic corrosion. Apply thread lubricant or anti-seize compound as appropriate for the service environment to ease future disassembly.