Value Collection MSC-04913158 Hand Tap 7/16-14 Unc

Product Description

The VALUE COLLECTION MSC-04913158 is a 7/16-14 UNC bottoming hand tap ground to an H3 thread limit in bright, uncoated high speed steel. With four straight flutes and a left-hand thread direction, it cuts threads to the bottom of blind holes where standard taper or plug taps cannot reach. The bright finish keeps the surface uncoated for straightforward inspection and is well suited to a wide range of ferrous and non-ferrous materials. Licensed machinists, tool-and-die makers, and maintenance technicians reach for this tap when a job calls for full-depth left-hand threads in a manually driven application.

This tap is used in manual threading operations on machine components, fixtures, and assemblies that require left-hand thread engagement. The bottoming chamfer — approximately 1 to 2 threads — allows threading to the base of a blind hole after a taper or plug tap has started the thread. The 1-7/16 inch thread length accommodates most standard thread depths for 7/16-14 UNC fastener applications. It is appropriate for use in job shop, maintenance, and production environments where hand-tap operations are performed with a standard tap wrench or T-handle.

Key Features

• Bottoming chamfer for threading to the bottom of blind holes
• Left-hand thread direction for LH fastener and insert applications
• H3 thread limit for consistent tolerance control in standard UNC fits
• Four straight flutes for chip clearance in through and blind hole work
• Bright, uncoated high speed steel construction — no coating to obscure wear
• No coolant-through feature — designed for hand-tap use with cutting fluid applied externally

Compatibility

Designed as a standard hand tap replacement for 7/16-14 UNC left-hand thread applications requiring a bottoming chamfer and H3 thread limit.

Installation Notes

Hand taps should be installed using a properly sized tap wrench; do not use power drivers unless the tap is rated for machine use. Secure the workpiece firmly and ensure the tap is started square to the hole to prevent tap breakage. Apply an appropriate cutting fluid for the workpiece material throughout the operation. Back the tap off periodically to break chips and clear the flutes, especially in deeper blind holes.