Value Collection 211223PR Flat Socket Cap Screw 3/8-16

Product Description

The VALUE COLLECTION 211223PR is a flat socket cap screw designed for countersunk fastening applications in metalworking, fabrication, and general mechanical assembly. It features an 82-degree flat head with a 7/32-inch hex socket drive, allowing flush or below-surface seating in properly countersunk holes. The screw measures 3/8-16 UNC thread by 2-1/2 inches overall length and is partially threaded for improved clamping in thicker workpieces. Constructed from alloy steel with a black oxide finish, it offers solid mechanical strength and moderate corrosion resistance in dry or lightly oiled environments. Licensed machinists, millwrights, and maintenance mechanics are the typical installers.

This fastener suits inch-system assemblies requiring a low-profile or flush head profile. Common applications include machine guards, fixture plates, tooling jigs, and structural panels where a protruding head would interfere with mating surfaces or moving components. The 3/8-16 UNC thread pitch is one of the most widely used coarse-thread standards in American inch-system fabrication, making this screw a straightforward drop-in for a broad range of shop and field repair situations. Sold individually, with a minimum order quantity of 50 pieces.

Key Features

• 82-degree flat head seats flush or below surface in standard countersunk holes
• 7/32-inch hex socket drive for precise torque application with a standard Allen key or hex bit
• 3/8-16 UNC coarse thread — widely compatible with standard tapped holes in inch-system assemblies
• Partially threaded shank improves clamping force in thicker material stacks
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM F835 fastener standards
• Black oxide finish provides a clean appearance and light surface protection

Compatibility

Designed for use in standard inch-system countersunk applications requiring a 3/8-16 UNC flat socket cap screw per ASME/ANSI B18.3 and ASTM F835 specifications.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 7/32-inch hex key or matching socket bit. Always ensure the receiving hole is properly countersunk to 82 degrees before driving the fastener. De-energize and lock out any machine or assembly before fastener replacement or installation per applicable OSHA lockout/tagout procedures. Avoid cross-threading — start fasteners by hand before applying torque.