Value Collection -36823-1 Flat Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION -36823-1 is a flat socket cap screw designed for flush or countersunk fastening applications in metalworking, machinery assembly, and fabrication work. It features an 82-degree flat head profile with a 3/16-inch hex socket drive, allowing installation with a standard hex key or Allen wrench. The fastener is manufactured from alloy steel with a black oxide finish that provides mild corrosion resistance and reduces surface reflectivity. It measures 5/16-18 UNC thread size at 7/8 inches overall length and is fully threaded. This screw is commonly installed by machinists, millwrights, and maintenance technicians who require a low-profile fastener that sits flush with or below a mating surface.

This flat socket cap screw is suited for use in general industrial and mechanical assemblies where a countersunk socket drive fastener is required. The 5/16-18 UNC thread pattern is a common inch-series coarse thread, making it compatible with a wide range of tapped holes found in equipment frames, fixtures, jigs, and machine components. The black oxide alloy steel construction holds up in dry or lightly oiled environments. Sold in a package quantity of 25 pieces, this fastener is appropriate for shop stock, repair work, and production assembly where multiples are needed.

Key Features

• 82-degree flat head profile for flush or countersunk seating
• 3/16-inch hex socket drive for precise torque application with standard hex keys
• 5/16-18 UNC fully threaded at 7/8-inch overall length
• Alloy steel construction for high tensile strength in demanding applications
• Black oxide finish reduces glare and provides light corrosion resistance in dry environments
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards
• Package quantity of 25 pieces suits shop stock and production use

Compatibility

Designed as a standard inch-series flat socket cap screw for use in any application requiring a 5/16-18 UNC countersunk socket drive fastener in a tapped or clearance hole sized for that thread.

Installation Notes

Installation is performed with a 3/16-inch hex key or Allen-style driver. The mating component must have an 82-degree countersink machined to the appropriate diameter for a 5/16-18 flat head screw to seat flush. Follow ASME B18.3 seating torque guidelines for alloy steel fasteners of this grade. Do not exceed the rated torque for the thread size, and inspect the countersink angle before installation to confirm compatibility with the 82-degree head geometry.