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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.

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Omegon Camera adaptor T2-Ring compatible with Canon EOS
Omegon
Camera adaptor T2-Ring compatible with Canon EOS
( 4 / 5 )
$ 19.90
ready for shipping in 24 h
Omegon Camera adaptor T2-Ring für Nikon
Omegon
Camera adaptor T2-Ring für Nikon
$ 19.90
ready for shipping in 24 h
Celestron Camera adaptor T2 ring for Canon EOS and ZenithStar 71/61 field flattener
Celestron
Camera adaptor T2 ring for Canon EOS and ZenithStar 71/61 field flattener
$ 29.90
ready for shipping in 1-2 weeks
Bresser Camera adaptor T2 ring compatible with Canon EOS R/RP Wide-T
Bresser
Camera adaptor T2 ring compatible with Canon EOS R/RP Wide-T
$ 25.90
ready for shipping in 24 h
ZWO Camera ASI 2600 MC Pro Color
ZWO
Camera ASI 2600 MC Pro Color
RRP:  $ 2,880.00
Our price:
$ 2,687.00
ready for shipping in 3-5 weeks
Celestron Camera adaptor T2-Ring for Nikon
Celestron
Camera adaptor T2-Ring for Nikon
$ 29.90
ready for shipping in 24 h
Skywatcher Flattener Evoguide 50ED
Skywatcher
Flattener Evoguide 50ED
$ 119.00
ready for shipping in 24 h
Omegon C-mount male to T2 adapter female
Omegon
C-mount male to T2 adapter female
$ 24.90
ready for shipping in 24 h
Omegon Adaptors 1.25'', 30mm extension tube
Omegon
Adaptors 1.25'', 30mm extension tube
$ 24.90
ready for shipping in 24 h
Skywatcher Camera adaptor T2-Ring compatible with Canon EOS
Skywatcher
Camera adaptor T2-Ring compatible with Canon EOS
$ 17.90
ready for shipping in 24 h
Omegon Adapter M48 male to T2-thead ring female
Omegon
Adapter M48 male to T2-thead ring female
$ 24.90
ready for shipping in 24 h
Baader Camera adaptor T-Ring for Sony E/NEX bayonet with D52/M48 and T2 thread
Baader
Camera adaptor T-Ring for Sony E/NEX bayonet with D52/M48 and T2 thread
$ 42.90
ready for shipping in 24 h
Omegon T2 ring for Minolta AF and Sony A-Mount cameras
Omegon
T2 ring for Minolta AF and Sony A-Mount cameras
$ 29.90
ready for shipping in 24 h
ZWO Camera ASI 174 MM Mono
ZWO
Camera ASI 174 MM Mono
RRP:  $ 840.00
Our price:
$ 779.00
ready for shipping in 24 h
ZWO Camera ASI 2600 MM Pro Mono
ZWO
Camera ASI 2600 MM Pro Mono
RRP:  $ 3,700.00
Our price:
$ 3,457.00
ready for shipping in 3-5 weeks
ASToptics Camera adaptor Sony Nex / E-mount T2 adapter
ASToptics
Camera adaptor Sony Nex / E-mount T2 adapter
$ 30.90
ready for shipping in 24 h
ASToptics Camera adaptor T-RING FOR OLYMPUS (FOUR THIRDS)
ASToptics
Camera adaptor T-RING FOR OLYMPUS (FOUR THIRDS)
$ 20.90
ready for shipping in 24 h
TS Optics T2 Adaptor Ring for Cameras with Micro Four Thirds bayonet (Panasonic, Olympus)
TS Optics
T2 Adaptor Ring for Cameras with Micro Four Thirds bayonet (Panasonic, Olympus)
$ 41.90
ready for shipping in 24 h
Omegon Adapter T2 male to T2 male
Omegon
Adapter T2 male to T2 male
$ 19.90
ready for shipping in 24 h
Celestron Camera adaptor T2 ring for Canon EOS M
Celestron
Camera adaptor T2 ring for Canon EOS M
$ 40.90
ready for shipping in 1-2 weeks
TS Optics Camera adaptor T2 ring for Sony E
TS Optics
Camera adaptor T2 ring for Sony E
$ 35.90
ready for shipping in 3-7 days
TS Optics Camera adaptor T2 ring for Sony Alpha Nex / E-mount
TS Optics
Camera adaptor T2 ring for Sony Alpha Nex / E-mount
$ 32.90
ready for shipping in 24 h
ZWO Camera ASI 462 MM Mono
ZWO
Camera ASI 462 MM Mono
RRP:  $ 397.00
Our price:
$ 371.00
ready for shipping in 3-5 weeks
Celestron Camera adaptor T2 ring for Sony E
Celestron
Camera adaptor T2 ring for Sony E
$ 40.90
ready for shipping in 24 h
TS Optics Tilting Collimator T2
TS Optics
Tilting Collimator T2
RRP:  $ 55.00
Our price:
$ 52.00
ready for shipping in 24 h
Starlight Xpress Camera Trius PRO-674 Mono
Starlight Xpress
Camera Trius PRO-674 Mono
$ 2,280.00
ready for shipping in 1-2 weeks
Starlight Xpress Camera Trius PRO-674C Color
Starlight Xpress
Camera Trius PRO-674C Color
$ 2,280.00
ready for shipping in 1-2 weeks
Starlight Xpress Camera Trius PRO-825 Mono
Starlight Xpress
Camera Trius PRO-825 Mono
$ 1,690.00
ready for shipping in 24 h
Omegon Adapter T2 male to c-mount male
Omegon
Adapter T2 male to c-mount male
$ 34.90
ready for shipping in 24 h
TS Optics T2 ring for Olympus OM camera
TS Optics
T2 ring for Olympus OM camera
$ 25.90
ready for shipping in 3-7 days
Starlight Xpress Camera Trius PRO-825C Color
Starlight Xpress
Camera Trius PRO-825C Color
$ 1,690.00
ready for shipping in 1-2 weeks
Artesky Camera adaptor T2 ring Canon EOS
Artesky
Camera adaptor T2 ring Canon EOS
$ 16.90
ready for shipping in 24 h
Skywatcher Camera adaptor T2 ring for Nikon DSLR
Skywatcher
Camera adaptor T2 ring for Nikon DSLR
$ 17.90
ready for shipping in 1-2 weeks
TS Optics T2 quick-release connector with 360° rotation, length 5.5mm
TS Optics
T2 quick-release connector with 360° rotation, length 5.5mm
$ 57.00
ready for shipping in 24 h
Baader T-Ring Micro Four Thirds (4/3) adapter with 19mm detachable extender
Baader
T-Ring Micro Four Thirds (4/3) adapter with 19mm detachable extender
$ 31.90
ready for shipping in 1-2 weeks
Starlight Xpress Camera Trius PRO-694C Color
Starlight Xpress
Camera Trius PRO-694C Color
$ 2,850.00
ready for shipping in 24 h