Value Collection 88547831 Flat Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION 88547831 is a flat socket cap screw designed for applications requiring a flush or countersunk fastener with an internal hex drive. Sized at 5/16-18 UNC thread with an overall length of 0.5 inches, it is fully threaded from tip to head. The screw is machined from alloy steel and finished with a black oxide coating that provides mild corrosion resistance and reduces light reflection. The 3/16-inch hex socket drive accepts a standard Allen key or hex bit driver. Machinists, millwrights, and general tradespeople install this fastener when a low-profile head profile is required in a tapped hole.

This flat socket cap screw suits residential and commercial mechanical assemblies, fixtures, machine guards, and fabricated steel components where the fastener head must sit flush or below the surface of the material. Its fully threaded shank provides maximum thread engagement across the full 0.5-inch length, making it suitable for thin material applications with tapped through-holes. It is offered in a package quantity of 13 pieces with a minimum order quantity of 1.

Key Features

• Flat countersunk head allows flush or below-surface installation in countersunk holes
• 3/16-inch hex socket drive for use with standard Allen keys or hex bit drivers
• 5/16-18 UNC thread standard for broad compatibility with inch-system tapped holes
• Fully threaded shank maximizes thread engagement over the 0.5-inch length
• Alloy steel construction provides strength suitable for mechanical fastening applications
• Black oxide finish offers mild corrosion resistance and low-reflectance appearance

Compatibility

Designed as a standard inch-system flat socket cap screw for use in any tapped hole conforming to 5/16-18 UNC thread specifications.

Installation Notes

Installation is performed with a 3/16-inch hex key or hex bit driver. Ensure the mating hole is properly countersunk to the correct angle to seat the flat head flush. Verify thread engagement depth is sufficient in the tapped hole before torquing. Do not exceed the rated drive torque for the fastener size to avoid stripping the socket or damaging the threads.