#4-40 UNC Carbon Steel Tap Set - 2 Pack

Carbon Steel Tap Set

Size: #4-40

Number of Flutes: 3

QTY: 2 Tap Sets

Tap Set Contains: 1 Taper, 1 Plug, and 1 Bottoming Tap.

Used to re-thread damaged and or jammed threads.
May also be used to thread mild steels.
Hand Taps come in three styles Taper, Plug or Bottoming.

Taper Style: Starts the thread square with the workpiece.

Plug Style: Generally used in thru holes.

Bottom Style: Generate the thread to the bottom of the hole.