Value Collection MSC-04917175 Straight Flute Tap 3/4-16 Unf

Product Description

The VALUE COLLECTION MSC-04917175 is a straight flute tap designed for cutting 3/4-16 UNF internal threads in blind holes and through-hole applications where a left-hand thread is required. Built from high-speed steel (HSS) with a bright, uncoated finish, this tap delivers consistent thread form in ferrous and non-ferrous materials. It features a bottoming chamfer, allowing threads to be cut to the very bottom of a blind hole. With 4 flutes and an H3 thread limit, the tap holds tight dimensional tolerances appropriate for a 3B class of fit, making it suitable for precision fastener applications in machining and maintenance environments.

This tap is intended for use by machinists, tool-and-die makers, and maintenance professionals who require left-hand UNF threading in blind-hole or close-tolerance applications. The bottoming chamfer is especially useful when the full thread depth must be achieved in shallow blind holes. The bright, uncoated finish makes it appropriate for use with standard cutting fluids in general-purpose tapping operations. A thread length of 2 inches and an overall length of 4.25 inches make it compatible with standard tap handles and machine tapping setups.

Key Features

• 3/4-16 UNF left-hand thread form for precision blind-hole applications
• Bottoming chamfer allows threading to the full depth of a blind hole
• 4 flutes with H3 thread limit for 3B class-of-fit tolerances
• High-speed steel construction for durability in ferrous and non-ferrous materials
• Bright, uncoated finish compatible with standard cutting fluids
• 2-inch thread length with 4.25-inch overall length suits standard tap wrenches and machines

Compatibility

Designed as an OEM-style replacement or direct-use tap for any application requiring a 3/4-16 UNF left-hand internal thread at a 3B class of fit.

Installation Notes

Tapping operations should be performed by qualified machinists or maintenance technicians familiar with thread-cutting procedures. Always apply an appropriate cutting fluid or tapping compound for the workpiece material before and during tapping to reduce heat and extend tap life. Secure the workpiece firmly and ensure the tap is started perpendicular to the hole to avoid cross-threading or tap breakage. Never back-drive a bottoming tap under power without confirming proper depth clearance.