Value Collection MSC-04912267 Hand Tap 3/8-24 Unf Taper Lh

Product Description

The VALUE COLLECTION MSC-04912267 is a 3/8-24 UNF straight-flute hand tap designed for cutting left-hand internal threads in a range of metals and materials. Built from high speed steel with a bright uncoated finish, this taper-chamfer tap is intended for hand tapping operations where the cutting action begins gradually over the first several threads. The H3 thread limit and 3B class of fit make it suitable for standard tolerance threading applications. Four flutes provide adequate chip clearance during through-hole and shallow blind-hole work. With an overall length of 2.9375 inches and a thread length of 1.25 inches, the tap is sized for general-purpose bench and machine-assisted hand tapping tasks performed by machinists, maintenance technicians, and tool-and-die professionals.

This tap is used wherever a left-hand 3/8-24 UNF thread must be cut by hand, including repair work on fastener threads with intentional reverse-direction engagement, specialty fixture fabrication, and applications where standard right-hand threading would loosen under operational torque. The taper chamfer makes it suitable as a starting tap in new holes or as the primary tap in through-hole applications. It is appropriate for use in steel, aluminum, brass, and similar machinable materials at appropriate feeds and with cutting fluid.

Key Features

• Left-hand thread direction for reverse-engagement fastener applications
• Taper chamfer distributes cutting load gradually across the leading threads
• High speed steel construction provides hardness and wear resistance for general-purpose tapping
• Bright uncoated finish suitable for use with standard cutting fluids
• H3 thread limit and 3B class of fit for standard tolerance internal threads
• 4-flute straight-flute design offers balanced chip evacuation in through-hole work

Compatibility

Designed as a standard hand tap for cutting 3/8-24 UNF left-hand internal threads. Compatible with conventional tap handles and T-handle wrenches sized for 3/8 inch taps.

Installation Notes

This tap is installed by a machinist or maintenance technician using a standard tap handle or T-wrench. Always apply cutting fluid appropriate to the workpiece material and back off periodically to break chips. Secure the workpiece firmly before tapping to prevent movement. Forcing a tap beyond its cutting capacity risks breakage; use steady, even pressure and verify hole diameter is correct for a 3/8-24 thread prior to tapping.