Value Collection 721219PR Flat Socket Cap Screw 3/8-24

Product Description

The VALUE COLLECTION 721219PR is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features a hex socket drive and is manufactured from alloy steel with a black oxide finish for moderate corrosion resistance. The screw measures 3/8-24 thread size with an overall length of 3 inches and uses a 7/32-inch hex key drive. Threading is partial, making it suitable for through-hole and clearance-hole applications where the shank provides added shear resistance. This fastener meets ASME/ANSI B18.3 and ASTM F835 standards and is used by machinists, maintenance technicians, and mechanical contractors.

This flat socket cap screw is suited for general mechanical assemblies, machine tooling, and fixture work where a low-profile flush head is required. The UNF (Unified National Fine) thread form provides finer thread pitch for applications demanding greater clamping force and vibration resistance in ferrous and non-ferrous assemblies. It is commonly used in precision equipment, jigs, and light structural connections where head clearance is limited.

Key Features

• Flat countersunk head provides a flush surface finish after installation
• Hex socket drive accepts a 7/32-inch hex key for precise torque application
• Alloy steel construction for high tensile strength in mechanical assemblies
• Black oxide finish offers mild corrosion and abrasion resistance
• Partial threading allows shank engagement for improved shear load performance
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard UNF replacement or service fastener for mechanical assemblies requiring a 3/8-24 flat socket cap screw with a 3-inch overall length and partial threading per ASME/ANSI B18.3.

Installation Notes

Installation is performed by machinists or mechanical technicians using a 7/32-inch hex key or socket driver. The mating hole should be properly countersunk to the appropriate angle to seat the flat head flush with the workpiece surface. Ensure threads and mating surfaces are clean and free of debris before installation. Follow applicable torque specifications for 3/8-24 alloy steel fasteners as defined by the relevant assembly drawing or engineering standard.