Value Collection 721520BR Flat Socket Cap Screw 3/4-16

Product Description

The VALUE COLLECTION 721520BR is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features a 3/4-16 UNF thread and measures 1.5 inches in overall length. The 82-degree flat head seats into a standard countersunk hole, keeping the fastener face flush with or below the workpiece surface. Drive engagement is via a 1/2-inch hex socket. Constructed from alloy steel with a black oxide finish, this screw delivers solid mechanical strength and moderate corrosion resistance in dry or lightly protected environments. Installation requires a matching hex socket driver or Allen key. Licensed mechanics, machinists, and maintenance technicians are the typical installers.

This screw is suited for general industrial, mechanical assembly, and maintenance applications where a low-profile fastener is required. The fully threaded shank engages material along its entire length, making it appropriate for through-hole or blind-hole installations where maximum thread engagement is needed. The black oxide finish provides a clean appearance and light rust inhibition, commonly specified in tooling fixtures, machine guards, brackets, and structural assemblies. The inch-series UNF thread pitch offers finer engagement than UNC, supporting use in higher-vibration or load-sensitive connections.

Key Features

• 82-degree flat head seats flush in standard countersunk holes
• 1/2-inch hex socket drive for high-torque installation with standard Allen tooling
• 3/4-16 UNF fully threaded shank for maximum thread engagement
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM F835 fastener standards
• Black oxide finish provides light corrosion resistance and uniform dark appearance
• Overall length of 1.5 inches measured from head to tip

Compatibility

Designed as an OEM-style replacement or direct-use fastener for any application specifying a 3/4-16 UNF x 1.5-inch 82-degree flat socket cap screw per ASME/ANSI B18.3 or ASTM F835.

Installation Notes

Install using a calibrated 1/2-inch hex socket driver to ensure proper seating and avoid rounding the drive recess. Countersink the receiving hole to 82 degrees for full head contact before installation. Apply appropriate thread lubricant or thread-locking compound as required by the assembly specification. De-energize and lock out any equipment before fastener service on mechanical assemblies.