Cleveland C54729 Hand Tap 1/2-13 Unc Plug 3-flute Hss

Product Description

The CLEVELAND C54729 is a straight-flute hand tap designed for cutting internal threads in both blind holes and through-holes. Manufactured from high speed steel (HSS) with a bright, uncoated finish, this tap produces 1/2-13 UNC right-hand threads to a Class 3B fit with an H3 thread limit. The plug chamfer — with a moderate lead-in of several threads — makes it well suited for starting in a pre-drilled hole while maintaining control through the threading pass. Overall length is 3.375 inches with a thread length of 0.94 inches. Machinists, toolroom technicians, and maintenance mechanics reach for this tap when accuracy and thread quality matter.

This tap is used in general metalworking, maintenance, repair, and production threading applications where 1/2-13 UNC internal threads are required. It is appropriate for use in alloy steel, carbon steel, aluminum, and free-machining stainless steel workpieces. The straight-flute geometry is particularly effective in through-hole applications and in short blind holes where chip clearance is managed manually or with cutting fluid. It fits standard tap wrenches sized for a 0.275-inch square drive.

Key Features

• 1/2-13 UNC thread form, right-hand, Class 3B fit with H3 thread limit for precise tolerance control
• Plug chamfer provides a balanced lead-in suitable for both blind-hole and through-hole threading
• High speed steel construction offers good wear resistance across a range of workpiece materials
• Bright uncoated finish allows direct visual inspection of the cutting edges before and after use
• 3-flute straight-flute design works with standard tap wrenches and T-handles
• Compatible with alloy steel, carbon steel, aluminum, and free-machining stainless steel

Compatibility

Designed for use in any application requiring a 1/2-13 UNC Class 3B internal thread. Suitable for alloy steel, carbon steel, aluminum, and free-machining stainless steel workpieces in blind-hole and through-hole threading operations.

Installation Notes

This tap is installed by machinists, toolroom technicians, or maintenance mechanics using a standard tap wrench. Before tapping, verify the pilot hole diameter is correct for 1/2-13 UNC to avoid tap breakage or undersized threads. Apply a suitable cutting fluid for the workpiece material to extend tap life and improve thread finish. Back the tap off periodically during cutting to break chips and prevent binding, especially in blind-hole applications.