Cleveland C54665 Straight Flute Hand Tap 7/16"-20 pneumatic accessory

Three-Piece Tap Kit

The Cleveland C54665 is a three-piece tap kit designed for cutting internal threads in metal. It contains bottoming, plug and taper taps in a 7/16"-20 UNF size made from high-speed steel. The set suits maintenance technicians and machinists who need to create or repair fine-pitch threads in workshop or field conditions. Each tap has four straight flutes and a bright uncoated finish.

Thread Repair and Small-Batch Threading

This kit fits jobs that require a class 3B fit with a 2B thread limit and right-hand thread direction. The 7/8-inch thread length and 3 5/32-inch overall length suit through-holes and blind holes in thinner workpieces. Buyers needing larger diameters, left-hand threads or coated tools for high-volume production should look at alternative tap sets. The 75 percent thread drill size of 9.95 mm matches standard UNF tapping charts.

Sustained Hand-Tapping Performance

High-speed steel construction maintains cutting edges during repeated manual threading operations. The four-flute design clears chips effectively in both through and blind holes when used with proper lubrication. Cutting speed drops if the taps are driven by high-torque power tools without speed control. Consistent hand pressure and regular chip removal prevent binding during extended use.