Value Collection MSC-04472163 3/8-16 Unc Plug Tap 4 Flutes Hss

Product Description

The VALUE COLLECTION MSC-04472163 is a straight flute plug tap designed for cutting 3/8-16 UNC internal threads in through-holes and blind holes with adequate chip clearance. Made from high-speed steel with a bright, uncoated finish, it delivers reliable thread-cutting performance across a range of common work materials. The plug chamfer spans several lead threads, distributing the cutting load and making it suitable for most general-purpose tapping applications. With 4 flutes and an H3 thread limit, this tap produces 3B class of fit threads that meet standard tolerance requirements for fastener assemblies. Overall length is 2-15/16 inches and thread length is 1-1/4 inches.

This tap is used in machine shops, maintenance and repair operations, and production environments where 3/8-16 UNC threads are required. Right-hand thread direction suits the vast majority of standard fastener applications. It is appropriate for use in manual tap handles or machine tapping operations at controlled feed rates. Machinists, tool and die makers, and general maintenance trades install and use this tool for threading steel, aluminum, and similar machinable materials.

Key Features

• 3/8-16 UNC thread form with right-hand thread direction
• 4 straight flutes for chip evacuation in through-hole and open blind-hole applications
• Plug chamfer distributes cutting load across several lead threads for general-purpose use
• H3 thread limit produces 3B class of fit threads to standard tolerance
• High-speed steel construction provides hardness and wear resistance for common work materials
• Bright, uncoated finish — compatible with applied cutting fluids and lubricants

Compatibility

Designed as a general-purpose replacement or stock tap for standard 3/8-16 UNC tapping applications in manual or machine tapping setups.

Installation Notes

Always secure the workpiece firmly before tapping and apply an appropriate cutting fluid or tapping oil to extend tool life and improve thread quality. For machine tapping, use a tapping head or floating holder to prevent tap breakage from misalignment. Inspect the tap for wear or chipping before each use and replace if cutting edges show damage. Dispose of worn taps per shop safety procedures and keep them separated from usable tooling.