Inner Circum (mm) | Inner Circum(Inches) | UK/IE | EU | US | FR | CH | Inner Diam (mm) | JP | DE |
41 | 1.61 | 41 | 41 | 1 | 13.05 | ||||
41.25 | 1.62 | D | 41 1/4 | 1 1/4 | 13.13 | ||||
41.5 | 1.63 | 2 | 41 1/2 | 1 1/2 | 13.21 | ||||
41.75 | 1.64 | 41 3/4 | 1 3/4 | 13.29 | 13 1/4 | ||||
42 | 1.65 | D 1/2 | 42 | 42 | 2 | 13.37 | 2 | ||
42.25 | 1.66 | 2 1/4 | 42 1/4 | 2 1/4 | 13.45 | ||||
42.5 | 1.67 | E | 42 1/2 | 2 1/2 | 13.53 | 13 1/2 | |||
42.75 | 1.68 | 2 1/2 | 42 3/4 | 2 3/4 | 13.61 | ||||
43 | 1.69 | 43 | 43 | 3 | 13.69 | 3 | |||
43.25 | 1.7 | E 1/2 | 43 1/4 | 3 1/4 | 13.77 | 13 3/4 | |||
43.5 | 1.71 | 2 3/4 | 43 1/2 | 3 1/2 | 13.85 | ||||
43.75 | 1.72 | F | 43 3/4 | 3 3/4 | 13.93 | ||||
44 | 1.73 | 44 | 3 | 44 | 4 | 14.01 | 4 | 14 | |
44.25 | 1.74 | 44 1/4 | 4 1/4 | 14.09 | |||||
44.5 | 1.75 | F 1/2 | 44 1/2 | 4 1/2 | 14.16 | ||||
44.75 | 1.76 | 3 1/4 | 44 3/4 | 4 3/4 | 14.24 | 14 1/4 | |||
45 | 1.77 | G | 45 | 45 | 5 | 14.32 | 5 | ||
45.25 | 1.78 | 45 1/4 | 5 1/4 | 14.4 | |||||
45.5 | 1.79 | 3 1/2 | 45 1/2 | 5 1/2 | 14.48 | 14 1/2 | |||
45.75 | 1.8 | G 1/2 | 45 3/4 | 5 3/4 | 14.56 | ||||
46 | 1.81 | 46 | 3 3/4 | 46 | 6 | 14.64 | 6 | ||
46.25 | 1.82 | H | 46 1/4 | 6 1/4 | 14.72 | 14 3/4 | |||
46.5 | 1.83 | 46 1/2 | 6 1/2 | 14.8 | |||||
46.75 | 1.84 | 4 | 46 3/4 | 6 3/4 | 14.88 | ||||
47 | 1.85 | H 1/2 | 47 | 47 | 7 | 14.96 | 7 | 15 | |
47.25 | 1.86 | 4 1/4 | 47 1/4 | 7 1/4 | 15.04 | ||||
47.5 | 1.87 | I | 47 1/2 | 7 1/2 | 15.12 | ||||
47.75 | 1.88 | 47 3/4 | 7 3/4 | 15.2 | |||||
48 | 1.89 | 48 | 4 1/2 | 48 | 8 | 15.28 | 15 1/4 | ||
48.25 | 1.9 | I 1/2 | 48 1/4 | 8 1/4 | 15.36 | 8 | |||
48.5 | 1.91 | 48 1/2 | 8 1/2 | 15.44 | |||||
48.75 | 1.92 | J | 4 3/4 | 48 3/4 | 8 3/4 | 15.52 | 15 1/2 | ||
49 | 1.93 | 49 | 49 | 9 | 15.6 | ||||
49.25 | 1.94 | 5 | 49 1/4 | 9 1/4 | 15.68 | 9 | |||
49.5 | 1.95 | J 1/2 | 49 1/2 | 9 1/2 | 15.76 | 15 3/4 | |||
49.75 | 1.96 | 49 3/4 | 9 3/4 | 15.84 | |||||
50 | 1.97 | K | 50 | 5 1/4 | 50 | 10 | 15.92 | ||
50.25 | 1.98 | 50 1/4 | 10 1/4 | 16 | 10 | 16 | |||
50.5 | 1.99 | 5 1/2 | 50 1/2 | 10 1/2 | 16.07 | ||||
50.75 | 2 | K 1/2 | 50 3/4 | 10 3/4 | 16.15 | ||||
51 | 2.01 | 51 | 51 | 11 | 16.23 | 16 1/4 | |||
51.25 | 2.02 | L | 5 3/4 | 51 1/4 | 11 1/4 | 16.31 | 11 | ||
51.5 | 2.03 | 51 1/2 | 11 1/2 | 16.39 | |||||
51.75 | 2.04 | 6 | 51 3/4 | 11 3/4 | 16.47 | 16 1/2 | |||
52 | 2.05 | L 1/2 | 52 | 52 | 12 | 16.55 | |||
52.25 | 2.06 | 52 1/4 | 12 1/4 | 16.63 | 12 | ||||
52.5 | 2.07 | M | 6 1/4 | 52 1/2 | 12 1/2 | 16.71 | 16 3/4 | ||
52.75 | 2.08 | 52 3/4 | 12 3/4 | 16.79 | |||||
53 | 2.09 | 53 | 53 | 13 | 16.87 | ||||
53.25 | 2.1 | M 1/2 | 6 1/2 | 53 1/4 | 13 1/4 | 16.95 | |||
53.5 | 2.11 | 53 1/2 | 13 1/2 | 17.03 | 13 | 17 | |||
53.75 | 2.12 | N | 6 3/4 | 53 3/4 | 13 3/4 | 17.11 | |||
54 | 2.13 | 54 | 54 | 14 | 17.19 | ||||
54.25 | 2.14 | 54 1/4 | 14 1/4 | 17.27 | 17 1/4 | ||||
54.5 | 2.15 | N 1/2 | 7 | 54 1/2 | 14 1/2 | 17.35 | 14 | ||
54.75 | 2.16 | 54 3/4 | 14 3/4 | 17.43 | |||||
55 | 2.17 | O | 55 | 7 1/4 | 55 | 15 | 17.51 | 17 1/2 | |
55.25 | 2.18 | 55 1/4 | 15 1/4 | 17.59 | |||||
55.5 | 2.19 | 55 1/2 | 15 1/2 | 17.67 | 15 | ||||
55.75 | 2.19 | O 1/2 | 7 1/2 | 55 3/4 | 15 3/4 | 17.75 | 17 3/4 | ||
56 | 2.2 | 56 | 56 | 16 | 17.83 | ||||
56.25 | 2.21 | P | 56 1/4 | 16 1/4 | 17.9 | ||||
56.5 | 2.22 | 7 3/4 | 56 1/2 | 16 1/2 | 17.98 | 16 | 18 | ||
56.75 | 2.23 | 56 3/4 | 16 3/4 | 18.06 | |||||
57 | 2.24 | P 1/2 | 57 | 8 | 57 | 17 | 18.14 | ||
57.25 | 2.25 | 57 1/4 | 17 1/4 | 18.22 | 18 1/4 | ||||
57.5 | 2.26 | Q | 57 1/2 | 17 1/2 | 18.3 | 17 | |||
57.75 | 2.27 | 8 1/4 | 57 3/4 | 17 3/4 | 18.38 | ||||
58 | 2.28 | 58 | 58 | 18 | 18.46 | 18 1/2 | |||
58.25 | 2.29 | Q 1/2 | 8 1/2 | 58 1/4 | 18 1/4 | 18.54 | |||
58.5 | 2.3 | 58 1/2 | 18 1/2 | 18.62 | |||||
58.75 | 2.31 | R | 58 3/4 | 18 3/4 | 18.7 | 18 | |||
59 | 2.32 | 59 | 8 3/4 | 59 | 19 | 18.78 | 18 3/4 | ||
59.25 | 2.33 | 59 1/4 | 19 1/4 | 18.86 | |||||
59.5 | 2.34 | R 1/2 | 59 1/2 | 19 1/2 | 18.94 | ||||
59.75 | 2.35 | 9 | 59 3/4 | 19 3/4 | 19.02 | 19 | 19 | ||
60 | 2.36 | S | 60 | 60 | 20 | 19.1 | |||
60.25 | 2.37 | 9 1/4 | 60 1/4 | 20 1/4 | 19.18 | ||||
60.5 | 2.38 | 60 1/2 | 20 1/2 | 19.26 | 19 1/4 | ||||
60.75 | 2.39 | S 1/2 | 60 3/4 | 20 3/4 | 19.34 | 20 | |||
61 | 2.4 | 61 | 9 1/2 | 61 | 21 | 19.42 | |||
61.25 | 2.41 | T | 61 1/4 | 21 1/4 | 19.5 | 19 1/2 | |||
61.5 | 2.42 | 9 3/4 | 61 1/2 | 21 1/2 | 19.58 | ||||
61.75 | 2.43 | 61 3/4 | 21 3/4 | 19.66 | 21 | ||||
62 | 2.44 | T 1/2 | 62 | 62 | 22 | 19.74 | 19 3/4 | ||
62.25 | 2.45 | 10 | 62 1/4 | 22 1/4 | 19.81 | ||||
62.5 | 2.46 | U | 62 1/2 | 22 1/2 | 19.89 | ||||
62.75 | 2.47 | 62 3/4 | 22 3/4 | 19.97 | 22 | 20 | |||
63 | 2.48 | 63 | 10 1/4 | 63 | 23 | 20.05 | |||
63.25 | 2.49 | U 1/2 | 63 1/4 | 23 1/4 | 20.13 | ||||
63.5 | 2.5 | 10 1/2 | 63 1/2 | 23 1/2 | 20.21 | 20 1/4 | |||
63.75 | 2.51 | V | 63 3/4 | 23 3/4 | 20.29 | ||||
64 | 2.52 | 64 | 64 | 24 | 20.37 | 23 | |||
64.25 | 2.53 | 10 3/4 | 64 1/4 | 24 1/4 | 20.45 | ||||
64.5 | 2.54 | V 1/2 | 64 1/2 | 24 1/2 | 20.53 | 20 1/2 | |||
64.75 | 2.55 | 11 | 64 3/4 | 24 3/4 | 20.61 | ||||
65 | 2.56 | W | 65 | 65 | 25 | 20.69 | 24 | ||
65.25 | 2.57 | 65 1/4 | 25 1/4 | 20.77 | 20 3/4 | ||||
65.5 | 2.58 | 11 1/4 | 65 1/2 | 25 1/2 | 20.85 | ||||
65.75 | 2.59 | W 1/2 | 65 3/4 | 25 3/4 | 20.93 | ||||
66 | 2.6 | 66 | 11 1/2 | 66 | 26 | 21.01 | 25 | 21 | |
66.25 | 2.61 | X | 66 1/4 | 26 1/4 | 21.09 | ||||
66.5 | 2.62 | 66 1/2 | 26 1/2 | 21.17 | |||||
66.75 | 2.63 | 11 3/4 | 66 3/4 | 26 3/4 | 21.25 | 21 1/4 | |||
67 | 2.64 | X 1/2 | 67 | 67 | 27 | 21.33 | 26 | ||
67.25 | 2.65 | 67 1/4 | 27 1/4 | 21.41 | |||||
67.5 | 2.66 | Y | 12 | 67 1/2 | 27 1/2 | 21.49 | 21 1/2 | ||
67.75 | 2.67 | 67 3/4 | 27 3/4 | 21.57 | |||||
68 | 2.68 | 68 | 12 1/4 | 68 | 28 | 21.65 | 27 | ||
68.25 | 2.69 | Y 1/2 | 68 1/4 | 28 1/4 | 21.72 | 21 3/4 | |||
68.5 | 2.7 | 68 1/2 | 28 1/2 | 21.8 | |||||
68.75 | 2.71 | Z | 12 1/2 | 68 3/4 | 28 3/4 | 21.88 | |||
69 | 2.72 | 69 | 69 | 29 | 21.96 | 28 | 22 | ||
69.25 | 2.73 | 12 3/4 | 69 1/4 | 29 1/4 | 22.04 | ||||
69.5 | 2.74 | Z 1/2 | 69 1/2 | 29 1/2 | 22.12 | ||||
69.75 | 2.75 | 69 3/4 | 29 3/4 | 22.2 | |||||
70 | 2.76 | Z+1 | 70 | 13 | 70 | 30 | 22.28 | 22 1/4 | |
70.25 | 2.77 | 70 1/4 | 30 1/4 | 22.36 | 29 | ||||
70.5 | 2.78 | 70 1/2 | 30 1/2 | 22.44 | |||||
70.75 | 2.79 | Z+1 1/2 | 13 1/4 | 70 3/4 | 30 3/4 | 22.52 | 22 1/2 | ||
71 | 2.8 | 71 | 71 | 31 | 22.6 | ||||
71.25 | 2.81 | Z+2 | 71 1/4 | 31 1/4 | 22.68 | 30 | |||
71.5 | 2.81 | 13 1/2 | 71 1/2 | 31 1/2 | 22.76 | 22 3/4 | |||
71.75 | 2.82 | 71 3/4 | 31 3/4 | 22.84 | |||||
72 | 2.83 | Z+2 1/2 | 72 | 13 3/4 | 72 | 32 | 22.92 | ||
72.25 | 2.84 | 72 1/4 | 32 1/4 | 23 | 31 | 23 | |||
72.5 | 2.85 | Z+3 | 14 | 72 1/2 | 32 1/2 | 23.08 | |||
72.75 | 2.86 | 72 3/4 | 32 3/4 | 23.16 | |||||
73 | 2.87 | 73 | 73 | 33 | 23.24 | 23 1/4 | |||
73.25 | 2.88 | Z+3 1/2 | 14 1/4 | 73 1/4 | 33 1/4 | 23.32 | 32 | ||
73.5 | 2.89 | 73 1/2 | 33 1/2 | 23.4 | |||||
73.75 | 2.9 | Z+4 | 73 3/4 | 33 3/4 | 23.48 | 23 1/2 | |||
74 | 2.91 | 74 | 14 1/2 | 74 | 34 | 23.55 | |||
74.25 | 2.92 | 74 1/4 | 34 1/4 | 23.63 | 33 | ||||
74.5 | 2.93 | Z+4 1/2 | 14 3/4 | 74 1/2 | 34 1/2 | 23.71 | |||
74.75 | 2.94 | 74 3/4 | 34 3/4 | 23.79 | 23 3/4 | ||||
75 | 2.95 | Z+5 | 75 | 75 | 35 | 23.87 | |||
75.25 | 2.96 | 15 | 75 1/4 | 35 1/4 | 23.95 | ||||
75.5 | 2.97 | 75 1/2 | 35.5 | 24.03 | 34 | 24 | |||
75.75 | 2.98 | Z+5 ½ | 15 1/4 | 75 3/4 | 35 3/4 | 24.11 | |||
76 | 2.99 | 76 | 76 | 36 | 24.19 | ||||
76.25 | 3 | Z+6 | 76 1/4 | 36 1/4 | 24.27 | 24 1/4 | |||
76.5 | 3.01 | 15 1/2 | 76 1/2 | 36.5 | 24.35 | 35 | |||
76.75 | 3.02 | 76 3/4 | 36 3/4 | 24.43 | |||||
77 | 3.03 | Z+6 ½ | 77 | 15 3/4 | 77 | 37 | 24.51 | 24 1/2 | |
77.25 | 3.04 | 77 1/4 | 37 1/4 | 24.59 | |||||
77.5 | 3.05 | Z+7 | 77 1/2 | 37.5 | 24.67 | 36 | |||
77.75 | 3.06 | 16 | 77 3/4 | 37 3/4 | 24.75 | 24 3/4 | |||
78 | 3.07 | 78 | 78 | 38 | 24.83 | ||||
78.25 | 3.08 | Z+7 ½ | 78 1/4 | 38 1/4 | 24.91 | ||||
78.5 | 3.09 | 16 1/4 | 78 1/2 | 38.5 | 24.99 | 37 | 25 | ||
78.75 | 3.1 | Z+8 | 78 3/4 | 38 3/4 | 25.07 | ||||
79 | 3.11 | 79 | 16 1/2 | 79 | 39 | 25.15 | |||
79.25 | 3.12 | 79 1/4 | 39 1/4 | 25.23 | 25 1/4 | ||||
79.5 | 3.13 | Z+8 ½ | 79 1/2 | 39.5 | 25.31 | 38 | |||
79.75 | 3.14 | 16 3/4 | 79 3/4 | 39 3/4 | 25.39 | ||||
80 | 3.15 | Z+9 | 80 | 80 | 40 | 25.46 | 25 1/2 | ||
80.25 | 3.16 | 17 | 80 1/4 | 40 1/4 | 25.54 | ||||
80.5 | 3.17 | 80 1/2 | 40.5 | 25.62 | |||||
80.75 | 3.18 | Z+9 ½ | 80 3/4 | 40 3/4 | 25.7 | 39 | |||
81 | 3.19 | 81 | 17 1/4 | 81 | 41 | 25.78 | 25 3/4 | ||
81.25 | 3.2 | Z+10 | 81 1/4 | 41 1/4 | 25.86 |