Value Collection -36827-2 Flat Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION -36827-2 is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features an 82-degree flat head driven by a 3/16-inch hex socket. The fastener is partially threaded with a 5/16-18 UNC thread form and measures 2.5 inches in overall length. Manufactured from alloy steel with a black oxide finish, it offers moderate corrosion resistance and a clean, low-profile appearance. This screw meets ASME/ANSI B18.3 and ASTM F835 standards. Machinists, maintenance technicians, and mechanical contractors install this type of fastener in assemblies where the screw head must sit flush with or below the surface of the workpiece.

This flat socket cap screw is suited for use in machine assemblies, jigs, fixtures, tooling plates, and structural connections where a countersunk profile is required. The partial threading allows the unthreaded shank to pass cleanly through a clearance hole before engaging the tapped bore, which is a common configuration in clamped joint and through-bolt applications. The black oxide finish is compatible with oil or wax post-treatment for improved corrosion performance in light-duty environments. Minimum order quantity is 25 pieces.

Key Features

• 82-degree flat head seats flush in standard countersunk holes
• 3/16-inch hex socket drive for precise torque application with standard Allen wrenches or hex keys
• Partially threaded shank for clearance-fit through-hole applications
• 5/16-18 UNC thread form per ASME/ANSI B18.3 and ASTM F835
• Alloy steel construction with black oxide finish for strength and low-profile appearance

Compatibility

Designed as a standard inch-series flat socket cap screw for use in any application requiring a 5/16-18 UNC countersunk fastener with an 82-degree head angle and hex socket drive.

Installation Notes

Installation should be performed by a qualified machinist or mechanical technician familiar with socket-drive fasteners and countersunk joint design. Ensure the mating countersink is machined to the correct 82-degree angle to achieve full head seating. Use a properly sized 3/16-inch hex key or socket bit to avoid rounding the drive. Verify thread engagement depth meets engineering requirements before final torque application.