Value Collection MSC-04472254 3/8-24 Unf Bottoming Tap Hss

Product Description

The VALUE COLLECTION MSC-04472254 is a straight flute bottoming tap designed to cut 3/8-24 UNF internal threads in blind holes where full thread depth close to the bottom is required. Built from high-speed steel (HSS) with a bright, uncoated finish, it offers solid wear resistance for general threading operations in steel, aluminum, and similar materials. The four-flute design provides good chip clearance and stable cutting action. With a 1.25-inch thread length and an overall length of 2.9375 inches, this tap is sized for standard hand-tap or machine-tap applications across a wide range of threading tasks.

This bottoming tap is suited for maintenance, repair, and fabrication work in shop and field environments. The H3 thread limit provides a tolerance suitable for standard 3B class of fit applications, making it appropriate for threading operations where a reliable fit between mating fasteners is required. It is commonly used by machinists, millwrights, maintenance mechanics, and trade professionals who need to chase or cut threads to the bottom of blind bores in metal components.

Key Features

• Bottoming chamfer cuts threads to the bottom of blind holes
• 3/8-24 UNF thread size with 4 flutes for stable chip clearing
• High-speed steel construction for durability in general-purpose threading
• H3 thread limit meets 3B class of fit tolerance requirements
• Right-hand thread direction for standard threading operations
• Bright, uncoated finish suitable for use with cutting fluid

Compatibility

Designed as a standard bottoming tap for cutting 3/8-24 UNF right-hand internal threads in blind holes across common metal workpiece materials.

Installation Notes

This tap is installed by machinists or qualified tradespeople using a tap wrench, tapping handle, or compatible machine spindle. Always apply an appropriate cutting fluid to extend tool life and improve thread finish. Ensure the workpiece is securely fixtured before threading. Use a starting tap or plug tap first to establish thread lead before using a bottoming tap in a blind hole.