Value Collection 211231PR Flat Socket Cap Screw 3/8-24x1

Product Description

The VALUE COLLECTION 211231PR is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. Machined from alloy steel with a black oxide finish, this screw measures 3/8-24 x 1 inch overall length and is fully threaded. The 82-degree flat head seats into standard countersunk holes, and the 7/32-inch hex socket drive allows installation with a standard hex key. Licensed tradespeople and industrial assemblers use this fastener in mechanical assemblies, fixtures, and equipment requiring a low-profile, high-strength connection.

This fastener is suited for precision mechanical assemblies in manufacturing, maintenance, and industrial fabrication environments. The UNF (Unified National Fine) thread standard makes it appropriate where vibration resistance and fine thread engagement are priorities. The black oxide finish provides mild corrosion resistance and reduces light reflection on exposed hardware. It installs in both ferrous and non-ferrous base materials where 3/8-24 tapped holes are specified. Typical users include machinists, millwrights, and maintenance technicians working to ASME/ANSI B18.3 and ASTM F835 standards.

Key Features

• 82-degree flat head seats flush in standard countersunk holes
• 7/32-inch hex socket drive for precise torque application with a hex key
• Fully threaded 3/8-24 UNF shank along the entire 1-inch overall length
• Alloy steel construction delivers high tensile strength for demanding assemblies
• Black oxide finish provides mild corrosion resistance and low-glare surface
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed for use in any application with a 3/8-24 UNF tapped hole requiring an 82-degree countersunk flat head fastener per ASME/ANSI B18.3 specifications.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician using a correctly sized 7/32-inch hex key or socket driver. Ensure the mating tapped hole is clean, properly formed to 3/8-24 UNF, and the countersink angle matches 82 degrees before driving the fastener. Apply appropriate thread lubricant or anti-seize compound if required by the assembly specification. Do not over-drive — use a calibrated torque wrench when a torque specification is called out by the equipment manufacturer.