Value Collection MSC-04489571 Hand Tap 1-3/8-12 Unf

Product Description

The VALUE COLLECTION MSC-04489571 is a straight-flute hand tap designed for cutting 1-3/8-12 UNF internal threads in a variety of materials. Manufactured from high speed steel with a bright, uncoated finish, this tap offers durable cutting performance in general-purpose threading applications. The taper chamfer distributes cutting load across multiple leading threads, making it well-suited for starting threads in through-holes or blind holes with adequate depth. With six flutes and a 3B class of fit at H4 thread limit, it produces threads within standard tolerance for precision fastener assemblies. Overall length is 6-1/16 inches with a 3-inch thread length. The tap weighs approximately 1.1 pounds.

This hand tap is used in metalworking and maintenance applications where 1-3/8-12 UNF threads are required. The right-hand thread direction and taper chamfer make it appropriate for use with a tap wrench or threading fixture on ferrous and non-ferrous metals. Machinists, tool and die makers, and maintenance technicians working on industrial equipment, hydraulic fittings, or structural assemblies will find this tap applicable to a wide range of threading jobs requiring UNF coarse-pitch replacement or new-thread cutting.

Key Features

• 1-3/8-12 UNF thread size with right-hand thread direction
• Taper chamfer for gradual thread engagement and easier thread starting
• 6-flute straight-flute geometry for general-purpose threading in through and blind holes
• High speed steel construction for durable performance across a range of materials
• Bright uncoated finish suitable for use with standard cutting fluids
• 3B class of fit at H4 thread limit for standard-tolerance threaded assemblies

Compatibility

Designed as a standard hand tap for cutting 1-3/8-12 UNF internal threads. Compatible with conventional tap wrenches and threading fixtures sized for 1-3/8-inch taps.

Installation Notes

This tap should be installed and used by qualified machinists or maintenance technicians familiar with hand-tapping procedures. Always secure the workpiece firmly and use an appropriate cutting fluid to reduce friction and extend tap life. Apply consistent, controlled torque with a properly sized tap wrench, backing off periodically to break chips. Inspect the tap for wear or chipping before each use to avoid thread damage or tap breakage.