Greenfield Threading
Greenfield Threading 3pc HSS Taper Plug Bottoming Hand Tap Set 174529
A three-piece high-speed steel hand tap set for cutting 3/8‑24 UNF threads with taper, plug and bottoming taps
- Three-piece set covers taper, plug and bottoming tasks
- High-speed steel construction resists wear during repeated use
- TiN coating reduces friction and extends cutting life
- UNF 3/8-24 threads suit fine-pitch fastening applications
- Four-flute design improves chip evacuation and thread quality
Three-piece HSS tap set for UNF threads
This Greenfield Threading hand tap set includes taper, plug and bottoming taps for 3/8 inch -24 UNF threads. The high-speed steel cutters carry a TiN coating and feature four flutes with an H3 thread limit for a 3B class of fit. Right-hand thread direction suits standard fastening tasks in maintenance and light production.
Replaces worn or missing single taps
A complete set removes the need to source individual taper, plug or bottoming taps when starting new threads or chasing damaged ones. The jump is worth it when a job requires all three stages — starting, intermediate and bottoming — in the same UNF size and the operator wants matched geometry across the sequence.
Straightforward hand-tapping installation
Each tap follows the standard square-drive shank for use with a tap wrench; no special holders are required. Common issues include tap breakage if chips are not cleared frequently in blind holes and thread oversize if lubrication is skipped or the wrong drill size is used.
Highlights
- Three-piece set covers taper, plug and bottoming tasks
- High-speed steel construction resists wear during repeated use
- TiN coating reduces friction and extends cutting life
- UNF 3/8-24 threads suit fine-pitch fastening applications
- Four-flute design improves chip evacuation and thread quality
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
What size tap wrench or handle fits the 3/8 In. -24 UNF taps in this set?
The taps have a 3/8 In. -24 UNF thread size with H3 limit and 3B class of fit; use a standard tap wrench sized for 3/8 inch diameter shanks.
How do I start threads correctly with the taper, plug, and bottoming taps?
Begin with the taper tap to align and start the thread, follow with the plug tap to deepen it, and finish with the bottoming tap to cut full depth in a blind hole.
When should I replace these high-speed steel TiN-coated taps?
Replace the taps when the cutting edges become dull, chipped, or when thread quality degrades, as the TiN coating extends wear resistance but cannot be re-sharpened effectively.
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