Value Collection -63861-21/2 Flat Socket Cap Screw 1/4-20

Product Description

The VALUE COLLECTION -63861-21/2 is a flat socket cap screw designed for fastening applications that require a flush or countersunk head profile. Sized at 1/4-20 thread with an overall length of 2.5 inches, this screw is fully threaded and features an 82-degree flat head driven by a 5/32 inch hex socket. Constructed from 18-8 stainless steel, it offers solid corrosion resistance for use in wet, humid, or mildly corrosive environments. Machinists, millwrights, and maintenance technicians commonly install these fasteners in structural assemblies, machine guards, fixtures, and equipment panels where a low-profile head is required.

This fastener suits a wide range of light-industrial, commercial, and mechanical assembly applications. The 1/4-20 UNC thread standard ensures broad compatibility with standard tapped holes and threaded inserts. The fully threaded shank provides maximum thread engagement across the full length, making it appropriate for thinner material stacks or wherever grip-length flexibility is needed. The 18-8 stainless steel construction performs reliably in food-service, marine-adjacent, and general outdoor environments where carbon steel fasteners would corrode prematurely.

Key Features

• 82-degree flat head profile seats flush in standard countersunk holes
• 5/32 inch hex socket drive for precise torque application with standard allen keys or hex bits
• 1/4-20 UNC thread standard for wide compatibility with tapped holes and inserts
• Fully threaded shank provides maximum thread engagement over the full 2.5 inch length
• 18-8 stainless steel construction resists corrosion in humid and mildly corrosive environments

Compatibility

Designed as a standard-geometry replacement or stocking fastener for any application requiring a 1/4-20 UNC flat socket cap screw with an 82-degree head angle and 2.5 inch overall length in 18-8 stainless steel.

Installation Notes

Installation requires a 5/32 inch hex key or hex bit driver. Ensure the mating countersink is machined to an 82-degree included angle for proper head seating. Verify thread engagement depth in the tapped hole meets applicable structural requirements before torquing. Power down or de-energize any equipment before fastener replacement on live assemblies.