Value Collection 721236PR Flat Socket Cap Screw 7/16-20

Product Description

The VALUE COLLECTION 721236PR is a flat socket cap screw designed for precision fastening applications requiring a flush or countersunk profile. Built from alloy steel with a black oxide finish, this screw provides reliable corrosion resistance and strength in demanding environments. It features an 82-degree flat head driven by a 1/4-inch hex socket and is partially threaded along its 3-inch overall length. The 7/16-20 thread is a fine-pitch UNF designation, offering superior thread engagement and resistance to loosening under vibration. Machinists, millwrights, and assembly technicians working in industrial and mechanical applications are the primary installers.

This flat socket cap screw is suited for applications where the fastener head must sit flush with or below the surface of the mating material. Common use cases include machine frames, fixtures, tooling plates, and mechanical assemblies where a protruding head would interfere with clearance or movement. The alloy steel construction and black oxide coating make it appropriate for indoor industrial environments. It meets ASME/ANSI B18.3 and ASTM F835 fastener standards, making it a code-recognized option for engineered assemblies.

Key Features

• 82-degree flat head profile seats flush in standard countersunk holes
• 1/4-inch hex socket drive for positive torque engagement with standard Allen keys or hex bits
• 7/16-20 UNF fine-pitch thread for high clamping force and vibration resistance
• Partially threaded shank allows controlled clamping without full-length thread engagement
• Black oxide finish provides mild corrosion resistance and reduced light reflection
• Meets ASME/ANSI B18.3 and ASTM F835 standards

Compatibility

Designed for use in any application requiring a countersunk socket cap screw with a 7/16-20 UNF thread pattern and 3-inch overall length in alloy steel.

Installation Notes

Installation should be performed by qualified machinists or mechanical assemblers using calibrated torque tooling appropriate to the alloy steel fastener grade. Ensure the mating hole is properly countersunk to 82 degrees before installation to achieve full head seating. De-energize, depressurize, or otherwise make safe any machinery or assembly before fastener service. Do not substitute a metric hex key for the specified 1/4-inch drive, as improper key fit can damage the socket recess.