Value Collection 721322BR Flat Socket Cap Screw 1-8x3.5in

Product Description

The VALUE COLLECTION 721322BR is a flat socket cap screw designed for fastening applications where a flush or countersunk head profile is required. Sized at 1-8 x 3-1/2 inches with full UNC threading, this screw features an 82-degree flat head and a 5/8-inch hex socket drive. The alloy steel construction provides high tensile strength, and the black oxide finish offers moderate corrosion resistance while reducing light reflection. This fastener meets ASME/ANSI B18.3 and ASTM F835 standards. It is installed by machinists, millwrights, maintenance technicians, and general trades professionals in structural and mechanical assembly work.

This flat socket cap screw is suited for use in machine assemblies, fixtures, tooling plates, and mechanical equipment where a low-profile head must sit flush with or below the workpiece surface. The fully threaded shank provides consistent clamping force across the full grip length. Common applications include industrial machinery, fabricated steel assemblies, and maintenance-repair-operations (MRO) work in manufacturing and facility environments.

Key Features

• 82-degree flat head seats flush in countersunk holes for a low-profile installation
• 5/8-inch hex socket drive for use with standard Allen or hex key tools
• Fully threaded 1-8 UNC shank for maximum thread engagement
• Alloy steel construction for high tensile strength in demanding applications
• Black oxide finish provides mild corrosion resistance and reduced surface reflectivity
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed for use in any application requiring a 1-8 UNC fully threaded flat socket cap screw with an 82-degree countersunk head profile, conforming to ASME/ANSI B18.3 dimensional standards.

Installation Notes

Installation requires a properly sized 5/8-inch hex key or Allen driver. The mating hole must be countersunk to an 82-degree included angle to achieve proper head seating. Always verify that the tapped hole thread class and material are compatible with the fastener grade before assembly. Follow applicable torque guidelines per ASME or the equipment manufacturer specifications for the fastener size and material pairing.