A T2 thread, also written T-2, has a diameter of 42mm and a thread pitch of 0.75mm. It is also sometimes written as M42x0.75.
The low pitch distinguishes it from other M42 threads.
ASToptics
Easy-Grip Twist-Lock adapter (M42 to 1.25")
( 5 / 5 )
$ 83.00
ready for shipping in 24
h
TS Optics
Adapter 2" / T2
$ 66.00
ready for shipping in 1-2
weeks