Stephans Tubusgewinde Stephans Tubusgewinde mm 60 3 20.32 RMS (0.8"x1_36") 0.8"x1_36" 0.71 external 6g 20.228 19.7549 19.3615 internal 6H 19.9291 20.3879 20.0831 20.32 external 4g6g 20.228 20.775 20.382 25 Nikon Micro (M25x0.75) M25x0.75 0.75 external 6g 24.908 24.4349 24.0415 internal 6H 25.1291 24.5879 24.2831 24.25 external 4g6g 24.908 24.4554 24.062 26 Mitutoyo Micro (M26x0.7) M26x0.7 0.7 external 6g 25.908 25.4349 25.0415 internal 6H 26.1291 25.5879 25.2831 25.25 external 4g6g 25.908 25.4554 25.062 28 28mm Filter thread (M28x0.75) M28x0.75 0.75 external 6g 27.908 27.4349 27.0415 internal 6H 28.1291 27.5879 27.2831 27.25 external 4g6g 27.908 27.4554 27.062 30 30mm Filter thread (M30x0.75) M30x0.75 0.75 external 6g 29.908 29.4349 29.0415 internal 6H 30.1291 29.5879 29.2831 29.25 external 4g6g 29.908 29.4554 29.062 30mm Tube connector thread (M30x2.4, nonstandard) M30x2.40 2.40 external 6g_mod 29.822 28.618 27.559 internal 6H_mod 30.2565 28.853 28.0255 28.0 external 4g6g_mod 29.822 28.65 27.591 37 37mm Filter thread (M37x0.75) M37x0.75 0.75 external 6g 36.908 36.4349 36.0415 internal 6H 37.1291 36.5879 36.2831 36.25 external 4g6g 36.908 36.4554 36.062 39 Leica (M39x0.977) M39x0.977 0.977 external 6g 38.884 38.262 37.7375 internal 6H 39.1572 38.4355 38.0355 38.0 external 4g6g 38.884 38.2845 37.76 42 M42 (M42x1) M42x1 1.0 external 6g 41.884 41.262 40.7375 internal 6H 42.1572 41.4355 41.0355 41.0 external 4g6g 41.884 41.2845 40.76 T2 (M42x0.75) M42x0.75 0.75 external 6g 41.908 41.4349 41.0415 internal 6H 42.1291 41.5879 41.2831 41.25 external 4g6g 41.908 41.4554 41.062 43 RaynoxBack (M43x0.75) M43x0.75 0.75 external 6g 42.908 42.4349 42.0415 internal 6H 43.1291 42.5879 42.2831 42.25 external 4g6g 42.908 42.4554 42.062 48 M48x0.75 M48x0.75 0.75 external 6g 47.908 47.4349 47.0415 internal 6H 48.1291 47.5879 47.2831 47.25 external 4g6g 47.908 47.4554 47.062 49 RaynoxFront (M49x0.75) M49x0.75 0.75 external 6g 48.908 48.4349 48.0415 internal 6H 49.1291 48.5879 48.2831 48.25 external 4g6g 48.908 48.4554 48.062 52 52mm Filter thread (M52x0.75) M52x0.75 0.75 external 6g 51.908 51.4349 51.0415 internal 6H 52.1291 51.5879 51.2831 51.25 external 4g6g 51.908 51.4554 51.062 M52x1 M52x1 1.0 external 6g 51.884 51.262 50.7375 internal 6H 52.1572 51.4355 51.0355 51.0 external 4g6g 51.884 51.2845 50.76 52mm Tube connector thread (M52x2.4, nonstandard) M52x2.40 2.40 external 6g_mod 51.822 50.613 49.5539 internal 6H_mod 52.2623 50.859 50.0524 50.0 external 4g6g_mod 51.822 50.647 49.5879 55 55mm Filter thread (M55x0.75) M55x0.75 0.75 external 6g 54.908 54.4349 54.0415 internal 6H 55.1291 54.5879 54.2831 54.25 external 4g6g 54.908 54.4554 54.062 58 58mm Filter thread (M58x0.75) M58x0.75 0.75 external 6g 57.908 57.4349 57.0415 internal 6H 58.1291 57.5879 57.2831 57.25 external 4g6g 57.908 57.4554 57.062 60 60mm Filter thread (M60x0.75) M60x0.75 0.75 external 6g 59.908 59.4349 59.0415 internal 6H 60.1291 59.5879 59.2831 59.25 external 4g6g 59.908 59.4554 59.062 62 62mm Filter thread (M62x0.75) M62x0.75 0.75 external 6g 61.908 61.4349 61.0415 internal 6H 62.1291 61.5879 61.2831 61.25 external 4g6g 61.908 61.4554 61.062 67 67mm Filter thread (M67x0.75) M67x0.75 0.75 external 6g 66.908 66.4349 66.0415 internal 6H 67.1291 66.5879 66.2831 66.25 external 4g6g 66.908 66.4554 66.062 70 70mm Filter thread (M70x0.75) M70x0.75 0.75 external 6g 69.908 69.4349 69.0415 internal 6H 70.1291 69.5879 69.2831 69.25 external 4g6g 69.908 69.4554 69.062 72 72mm Filter thread (M72x0.75) M72x0.75 0.75 external 6g 71.908 71.4349 71.0415 internal 6H 72.1291 71.5879 71.2831 71.25 external 4g6g 71.908 71.4554 71.062 77 77mm Filter thread (M77x0.75) M77x0.75 0.75 external 6g 76.908 76.4349 76.0415 internal 6H 77.1291 76.5879 76.2831 76.25 external 4g6g 76.908 76.4554 76.062