Product Description
Thread | 1/4 - 20 UNC |
Diameter | 1/4" (0.250") |
Thread pitch | 20 tpi |
Material | Chrome Alloy |
Suggested tapping drill | 5.1mm |
Brands | Bordo, Sutton |
Available in 3 leads:
Taper: 8 - 10 leads of thread used for starting new threads
Intermediate: Less tapered, 4 - 5 leads, used to follow a Taper tap or for restoring threads
Bottoming: Very little taper 1 1/2 - 2 1/2 leads, so will cut a new thread to the bottom of a blind hole, but the lack of taper makes starting a new thread difficult.
A tap set is available and it it simply three times the price of a single tap.