Greenfield Threading
Greenfield Threading pneumatic accessory 301193 #5-44 UNF Bottoming 3 Flutes
Straight-flute hand tap cuts #5-44 UNF threads to a 2.60 mm drill size with a 0.63 in thread length and 1.94 in overall length in high-speed steel with TiN coating
- Bottoming tap cuts full threads to hole bottom
- #5-44 UNF thread size fits fine-pitch fasteners
- High-speed steel with TiN coating resists wear
- 94 in overall length suits standard holders
- 63 in thread length for controlled engagement
Threading tap for #5-44 UNF threads
This Greenfield Threading accessory is a straight-flute hand tap designed to cut internal #5-44 UNF threads. It suits mechanics and fabricators who need a bottoming tap for through-holes or blind holes where thread depth is limited. The high-speed steel body with TiN coating resists wear during repetitive hand-tapping tasks. Right-hand cutting direction matches standard fastener conventions.
Capacity and headroom for #5-44 UNF tapping
The tap cuts a 75 percent thread using a 2.60 mm drill size and conforms to H2 thread limits for a 2B class of fit. Its .63 in thread length defines the maximum depth it can reliably cut in a single pass. It runs out when the workpiece material exceeds the tap's hardness range or when hole depth surpasses the .63 in thread length without chip clearance. The 1.94 in overall length limits reach in deep cavities.
Thermals, noise and power draw in hand use
As a manual tool, the tap generates heat only through friction at the cutting edges during rotation. TiN coating reduces friction, limiting temperature rise in the workpiece and tap. Noise is restricted to the sound of the tap turning in the handle and chip formation. Power draw depends entirely on the operator's applied torque and speed. No external power source or cooling system is involved.
Highlights
- Bottoming tap cuts full threads to hole bottom
- #5-44 UNF thread size fits fine-pitch fasteners
- High-speed steel with TiN coating resists wear
- 94 in overall length suits standard holders
- 63 in thread length for controlled engagement
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
Will the #5-44 UNF bottoming tap fit my existing 2.60 mm drill bit?
Yes, the 75 percent thread drill size is 2.60 mm, matching that bit exactly.
How can I confirm the 301193 tap cuts full threads to the bottom of a blind hole?
The bottoming chamfer and 0.63 in thread length are designed to cut full threads to the hole bottom.
Does the 301193 package include the 2.60 mm drill bit or only the H2-limit tap?
The box contains the high-speed steel TiN-coated tap only; the drill bit is sold separately.
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