Value Collection 721405BR Flat Socket Cap Screw 3/4-16

Product Description

The VALUE COLLECTION 721405BR is a flat socket cap screw designed for flush or countersunk fastening applications in mechanical assemblies. It features an 82-degree flat head profile driven by a 1/2-inch hex socket, allowing the head to sit flush with or below the surface of the mating material. The screw measures 3/4-16 UNF thread by 1-1/4 inches in overall length and is fully threaded along its entire shank. Machined from alloy steel with a black oxide finish, it is suited for use where moderate corrosion resistance and a low-profile head are required. Licensed trades and industrial maintenance technicians commonly install this fastener in precision machinery, jigs, fixtures, and structural assemblies.

This screw is intended for general industrial and mechanical fastening applications where a countersunk head is necessary to avoid surface protrusion. The 3/4-16 UNF thread is a fine-pitch unified thread, making it appropriate for applications requiring precise clamping force control or use in thinner-walled components where coarse threads would not engage adequately. It conforms to ASME/ANSI B18.3 and ASTM F835 fastener standards, which govern dimensions, mechanical properties, and testing for socket cap screws in inch series.

Key Features

• 82-degree flat head profile for flush or countersunk installation
• 1/2-inch hex socket drive for use with standard hex keys or bit drivers
• 3/4-16 UNF fully threaded shank, 1-1/4 inches overall length
• Alloy steel construction for high tensile strength in demanding applications
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or direct-use fastener for any application requiring a 3/4-16 UNF flat socket cap screw with an 82-degree head angle and a 1/2-inch hex socket drive.

Installation Notes

This fastener is typically installed by machinists, millwrights, or mechanical maintenance technicians using a calibrated torque wrench and an appropriate 1/2-inch hex key or socket bit. Ensure the mating countersink is machined to an 82-degree included angle for proper head seating. Degrease threads and apply thread lubricant or specified thread-locking compound as required by the assembly specification before torquing. Follow applicable industry torque guidelines for alloy steel UNF fasteners at this diameter.