Value Collection 211167P Flat Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION 211167P is a flat socket cap screw designed for countersunk fastening applications where a flush or recessed finish is required. Sized at 5/16-18 x 1-1/2 inches with full UNC threading, it features an 82-degree flat head and a 3/16-inch hex socket drive. Manufactured from alloy steel with a black oxide finish, it offers improved corrosion resistance over bare steel and reduces light reflection in low-visibility or aesthetic-sensitive installations. This screw is installed with a hex key or Allen driver and is suited for machine assembly, tooling, fixtures, and structural fastening tasks handled by machinists, millwrights, and maintenance technicians.

This flat socket cap screw is used in applications where standard pan or button-head screws would protrude above the surface. The countersunk 82-degree flat head seats flush with or below the material surface, making it common in precision machine components, jigs, fixtures, enclosures, and equipment panels. The alloy steel construction and black oxide finish make it appropriate for indoor industrial environments where moderate corrosion resistance is needed. It conforms to ASME/ANSI B18.3 and ASTM F835 fastener standards, ensuring dimensional consistency for production and repair applications.

Key Features

• 82-degree flat head seats flush for clean, low-profile installations
• 3/16-inch hex socket drive for precise torque application with standard Allen tools
• Fully threaded 5/16-18 UNC shank for maximum thread engagement across the grip length
• Alloy steel construction provides high tensile strength for demanding mechanical applications
• Black oxide finish reduces surface corrosion and minimizes light glare
• Meets ASME/ANSI B18.3 and ASTM F835 standards for dimensional and mechanical compliance

Compatibility

Designed for use in any application requiring a 5/16-18 UNC countersunk fastener with an 82-degree flat head seating angle, including machine assembly, fixture fabrication, and equipment panel work where a flush surface is required.

Installation Notes

Installation is performed with a 3/16-inch hex key or Allen driver. The mating material must be drilled and countersunk to an 82-degree angle to achieve proper flush seating. De-energize and lock out any equipment before fastening components in or near powered machinery. Avoid over-torquing alloy steel screws in soft base materials such as aluminum or plastic to prevent thread stripping.