Value Collection MSC-04472262 Straight Flute Tap 3/8-24 Unf

Product Description

The VALUE COLLECTION MSC-04472262 is a straight flute tap designed to cut internal threads in ferrous and non-ferrous metals. It produces 3/8-24 UNF right-hand threads to a 3B class of fit, meaning threads meet standard tolerance for general-purpose fastened assemblies. The tap is ground to an H3 thread limit, which provides controlled oversize for plated or tight-tolerance applications. Constructed from high-speed steel with a bright uncoated finish, it is suited for hand tapping or machine tapping at moderate speeds. Machinists, tool-and-die makers, and maintenance technicians use this tap for thread repair and new-hole threading operations.

This tap is used in machine shops, maintenance facilities, and production environments where 3/8-24 UNF internal threads are required. The taper chamfer — typically 8 to 10 threads of lead — makes it the correct starting tap for through holes and the preferred choice when beginning a thread in a blind hole before following with a plug or bottoming tap. It is appropriate for use in steel, cast iron, aluminum, and similar materials at conventional cutting speeds.

Key Features

• 3/8-24 UNF thread form to 3B class of fit for standard tolerance assemblies
• H3 thread limit for controlled oversize suitable for plated finishes
• Taper chamfer for easy thread starting in through holes and blind holes
• 4 straight flutes for chip clearance in a variety of workpiece materials
• High-speed steel construction for durability across ferrous and non-ferrous metals
• Bright uncoated finish — no additional coating thickness to affect thread tolerance

Compatibility

Designed as a standard straight flute hand or machine tap for any application requiring a 3/8-24 UNF 3B internal thread.

Installation Notes

This tap is installed by a machinist or maintenance technician using a tap wrench, tapping fixture, or compatible CNC or drill press setup. The workpiece should be secured before tapping, and proper cutting fluid or tapping compound should be applied to extend tool life and improve thread finish. Confirm the correct tap drill diameter for 3/8-24 UNF before drilling the pilot hole. Back the tap out periodically to break chips and prevent binding, particularly in blind-hole applications.