Greenfield Threading 174535 pneumatic accessory

5/8-18 UNF tap set

The CHICAGO-LATROBE 174535 set provides taper, plug and bottoming hand taps for cutting right-hand UNF threads in a 5/8 inch size with an 18 pitch. Each tap is made from high-speed steel with a TiN coating and features four flutes built to a H3 thread limit for a 3B class of fit. This three-piece collection suits maintenance and repair tasks where new internal threads are required in ferrous and non-ferrous materials.

Consistent cutting under load

The high-speed steel substrate resists softening when heat builds during repeated passes, while the TiN coating reduces friction and extends edge life across the 1 13/16 inch thread length. Four flutes evacuate chips efficiently to prevent binding during sustained hand-tapping operations. The taper, plug and bottoming progression lets the user start, deepen and finish a hole without changing tool geometry.

Shop-ready construction

A 3 13/16 inch overall length gives ample leverage for controlled hand pressure in tight workspaces. Right-hand thread direction matches standard fastener conventions, and the H3 limit ensures compatibility with 3B gauge checking. The set omits powered-driver shanks, so it is not suited for high-speed machine tapping or for users who need spiral-point or spiral-flute geometries for blind-hole chip evacuation.