Value Collection MSC-04488169 Straight Flute Tap 7/8-14 Unf

Product Description

The VALUE COLLECTION MSC-04488169 is a straight flute tap designed for cutting 7/8-14 UNF internal threads in ferrous and non-ferrous materials. Built from high-speed steel with a bright/uncoated finish, this taper chamfer tap is suited for through-hole threading operations where chip evacuation runs in line with the flutes. The 4-flute configuration provides balanced cutting action and good thread form consistency. With an overall length of 4-11/16 inches and a thread length of 2-7/32 inches, it handles standard threading depths for 7/8-14 UNF applications. Class of fit is 3B, and the thread limit is H4, making it appropriate for standard tolerance threaded assemblies in machining and maintenance environments.

This tap is used in machine shop, maintenance, and fabrication settings where 7/8-14 UNF threads are required. The taper chamfer distributes cutting load across multiple leading threads, reducing torque demand and making it a practical choice for hand tapping or low-speed machine tapping. It is well suited for threading steel, cast iron, aluminum, and similar materials. Machinists, millwrights, and maintenance technicians commonly reach for this type of tap during fixture building, equipment repair, and part fabrication work.

Key Features

• 7/8-14 UNF thread form with 3B class of fit for standard tolerance assemblies
• Taper chamfer distributes cutting forces across the lead threads for reduced torque
• 4-flute straight design provides stable cutting and consistent thread form
• High-speed steel construction withstands heat generated in hand and machine tapping
• H4 thread limit supports accurate fit in standard 3B threaded holes
• Bright/uncoated finish suitable for use with cutting fluid in general-purpose applications

Compatibility

Designed as a general-purpose replacement or stock tap for any application requiring 7/8-14 UNF right-hand internal threads with a 3B class of fit and H4 thread limit.

Installation Notes

Always secure the workpiece firmly before tapping and use an appropriate cutting fluid to reduce friction and extend tool life. Back off the tap periodically to break chips and prevent binding, especially in deeper holes. Power down any machine tool completely before changing or inspecting taps. Follow shop safety practices and wear eye protection during all tapping operations.