Greenfield Threading
Greenfield Threading 174535 pneumatic accessory
Three-piece HSS tap set cuts UNF 5/8-18 threads in taper, plug and bottoming styles
- HSS construction resists wear during threading
- TiN coating extends tap life in steel
- Three-piece set covers taper plug and bottoming
- UNF 5/8-18 thread fits fine-pitch applications
- Four-flute design improves chip evacuation control
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.
Highlights
- HSS construction resists wear during threading
- TiN coating extends tap life in steel
- Three-piece set covers taper plug and bottoming
- UNF 5/8-18 thread fits fine-pitch applications
- Four-flute design improves chip evacuation control
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
Does the 174535 tap set generate noticeable heat during extended threading work?
Hand taps produce minimal heat when used with proper cutting fluid and moderate speed; the HSS TiN coating reduces friction compared to uncoated tools.
What tap wrench or handle do I need to turn the 5/8-18 taps in this set?
The 3 13/16 in overall length and square shank fit standard adjustable tap wrenches sized for 5/8 in. taps.
Can the H3 limit taps in this set cut threads in older UNF 5/8-18 holes that were cut to a 2B fit?
The H3 limit creates a 3B class of fit, which is tighter than 2B; it will cut but may require more torque in a pre-existing 2B hole.
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