Value Collection R63061443 Flat Socket Cap Screw

Product Description

The VALUE COLLECTION R63061443 is a flat socket cap screw designed for fastening applications that require a flush or countersunk finish. It features a 3/8-inch hex socket drive and an 82-degree flat head profile that seats cleanly into a countersunk hole, leaving the surface level when fully torqued. The fastener is manufactured from 18-8 stainless steel, which provides solid corrosion resistance in moderate-exposure environments. Thread size is 5/8-11 UNC with an overall length of 1-1/2 inches. This type of screw is commonly installed by machinists, millwrights, pipefitters, and general mechanical contractors where a recessed drive and low-profile head are required.

This flat socket cap screw is suited for general industrial, mechanical, and structural assembly work where a countersunk fastener is specified. The 5/8-11 UNC thread is a standard coarse-thread designation widely used in domestic fabrication and equipment manufacturing. The 18-8 stainless steel construction makes it a practical choice for environments with occasional moisture exposure, such as food processing equipment, marine adjacents, or outdoor mechanical assemblies where mild corrosion resistance is needed without stepping up to a higher alloy grade.

Key Features

• 82-degree flat head profile for flush countersunk installations
• 3/8-inch hex socket drive for use with standard allen keys or hex bit drivers
• 18-8 stainless steel construction for corrosion resistance in moderate-exposure environments
• 5/8-11 UNC coarse thread — a widely standardized domestic thread form
• 1-1/2-inch overall length suitable for medium-depth fastening applications

Compatibility

Designed for use in any application requiring a 5/8-11 UNC flat socket cap screw with an 82-degree countersink angle and a 3/8-inch hex socket drive.

Installation Notes

Installation is performed using a 3/8-inch hex key or hex socket bit driver. The mating hole must be countersunk to 82 degrees for the head to seat flush. Ensure the countersink depth and diameter are properly sized for the screw head before installation. Follow applicable torque guidance for 18-8 stainless steel fasteners of this thread size to avoid galling, and consider applying an anti-seize compound when threading into stainless or aluminum.