Value Collection 721332BR Flat Socket Cap Screw 1-1/4-7x3

Product Description

The VALUE COLLECTION 721332BR is a flat socket cap screw designed for flush or countersunk fastening applications in industrial, mechanical, and structural assemblies. It features an 82-degree flat head with a 7/8-inch hex socket drive, allowing installation with a standard hex key or Allen wrench. The fastener is fully threaded along its 3-inch overall length and carries a 1-1/4-7 UNC thread specification. Manufactured from alloy steel with a black oxide finish, it provides solid mechanical strength and moderate corrosion resistance in interior and protected environments. Typically installed by machinists, millwrights, or maintenance technicians.

This screw is suited for applications requiring a low-profile, countersunk head that sits flush with or below the mating surface. Common install scenarios include machinery frames, fixtures, tooling plates, and structural connections where protruding fastener heads are not acceptable. The UNC thread form and alloy steel construction make it appropriate for medium-to-heavy-duty mechanical assemblies. The black oxide finish blends visually in industrial settings and provides light surface protection against moisture and handling wear.

Key Features

• 82-degree flat head profile for countersunk, flush-mount installation
• 7/8-inch hex socket drive for positive torque transfer with a hex key
• Fully threaded 3-inch overall length for maximum thread engagement
• 1-1/4-7 UNC thread form per ASME/ANSI B18.3 and ASTM F835 standards
• Alloy steel construction for high tensile strength in demanding assemblies
• Black oxide finish for reduced light reflection and light corrosion resistance

Compatibility

Designed as a standard UNC flat socket cap screw per ASME/ANSI B18.3 and ASTM F835 for use in any 1-1/4-7 UNC tapped hole requiring a countersunk flat-head fastener.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a properly sized 7/8-inch hex key or Allen wrench. Ensure the mating hole is countersunk to match the 82-degree head angle before installation. Power down and de-energize any equipment before servicing fasteners on live machinery. Do not substitute a shorter-reach driver that may cam out under load and damage the socket drive recess.