Description
1/4"-28 UNF HSS Plug Hand Tap for cutting internal threads by hand or in a tapping head. Cutting edges on the chamfered lead progressively form the thread as the tap advances, with straight flutes carrying chips back out of the hole. This size has a 1/4" cutting diameter, 1" of flute, 2-1/2" overall length and a 0.255" shank.
- HSS construction that holds a keen edge at moderate cutting speeds and regrinds easily.
- Tin Coated finish, titanium nitride coating raises surface hardness and allows higher feeds.
- 1/4" thread at 28 threads per inch.
- Supplied 4 per package.
Specifications
- Size: 1/4"-28
- Thread Size: 1/4"
- Threads per inch: 28
- Diameter: 1/4"
- Shank Size: 0.255"
- Length: 2-1/2"
- Flute Length: 1"
- Material: HSS
- Finish: Tin Coated
- Measurement Type: Inch
- Pack Quantity: 4
Applications
For threading by hand with a tap wrench or in a tapping head, in steel, cast iron, aluminum and brass. Taper for starting, plug for general work, bottoming for threading to the base of a blind hole.
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