System of Measurement
For Shaft Diameter
1/32"-1 3/32"
1/32"-11/16"
1/32"-11/32"
1/32"-13/16"
1/32"-15/32"
1/32"-17/32"
1/32"-19/32"
1/32"-21/32"
1/32"-3/4"
1/32"-3/8"
1/32"-7/16"
1/32"-7/32"
1/32"-9/16"
1/32"-9/32"
3/32"
1/8"
5/32"
3/16"
1/4"
1/4"-1/2"
1/4"-5/16"
5/16"
3/8"
3/8"
3/8"-1 1/4"
3/8"-1 1/8"
3/8"-11/16"
3/8"-15/16"
3/8"-5/8"
3/8"-7/8"
3/8"-9/16"
13/32"
7/16"
1/2"
1/2"-1 1/4"
1/2"-1 1/8"
1/2"-1 3/8"
1/2"-1"
1/2"-13/16"
1/2"-15/16"
1/2"-3/4"
1/2"-5/8"
1/2"-7/8"
1/2"-9/16"
5/8"
5/8"-1 1/2"
5/8"-1 5/16"
5/8"-1"
5/8"-11/16"
5/8"-13/16"
5/8"-3/4"
11/16"
3/4"
3/4"-1 1/2"
3/4"-1 1/4"
3/4"-1 3/4"
3/4"-1 5/16"
3/4"-1"
3/4"-13/16"
3/4"-15/16"
3/4"-7/8"
7/8"
7/8"-1 1/2"
7/8"-1 1/8"
7/8"-1 5/16"
7/8"-1 5/8"
7/8"-1"
7/8"-15/16"
63/64"
1"
1"-1 1/16"
1"-1 1/2"
1"-1 1/4"
1"-1 13/16"
1"-1 3/4"
1"-1 5/16"
1"-1 7/8"
1 1/8"-1 7/8"
1 1/8"-2 1/2"
1 1/8"-2 1/8"
1 1/8"-2"
1 1/4"
1 1/2"
2 mm
3 mm
4 mm
5 mm
6 mm
8 mm
10 mm
12 mm
13 mm
14 mm
15 mm
16 mm
18 mm
20 mm
25 mm
26 mm
30 mm
10-14 mm
10-25 mm
12-30 mm
12-45 mm
6-9 mm
8-10 mm
8-15 mm
8-18 mm
OD
0.28"
0.29"
0.33"
0.35"
0.37"
0.4"
0.41"
0.42"
0.44"
0.45"
0.47"
0.5"
0.53"
0.54"
0.55"
0.56"
0.563"
0.58"
0.583"
0.59"
0.62"
0.63"
0.65"
0.666"
0.67"
0.69"
0.7"
0.708"
0.71"
0.749"
0.75"
3/4"
0.78"
0.79"
0.791"
0.8"
0.81"
0.83"
0.833"
0.837"
0.84"
0.85"
0.87"
0.875"
0.88"
0.899"
0.9"
0.91"
0.917"
0.92"
0.937"
0.94"
0.95"
0.959"
0.96"
1"
1.04"
1.05"
1.058"
1.06"
1.062"
1.063"
1.07"
1.08"
1.083"
1.088"
1.09"
1.1"
1.101"
1.125"
1.129"
1.13"
1.15"
1.165"
1.166"
1.167"
1.17"
1.172"
1.187"
1.188"
1.19"
1.2"
1.208"
1.236"
1.25"
1.29"
1.3"
1.31"
1.312"
1.32"
1.33"
1.333"
1.337"
1.34"
1.35"
1.36"
1.368"
1.37"
1.375"
1.38"
1.39"
1.4"
1.416"
1.417"
1.42"
1.438"
1.44"
1.449"
1.45"
1.458"
1.5"
1.536"
1.54"
1.549"
1.56"
1.562"
1.58"
1.583"
1.588"
1.59"
1.6"
1.61"
1.618"
1.62"
1.625"
1.63"
1.667"
1.67"
1.672"
1.69"
1.699"
1.7"
1.721"
1.729"
1.742"
1.75"
1.776"
1.784"
1.8"
1.83"
1.833"
1.85"
1.853"
1.868"
1.87"
1.875"
1.88"
1.9"
1.917"
1.92"
1.959"
2"
2.015"
2.03"
2.034"
2.04"
2.06"
2.08"
2.083"
2.09"
2.1"
2.118"
2.12"
2.125"
2.13"
2.14"
2.141"
2.166"
2.167"
2.17"
2.198"
2.2"
2.207"
2.22"
2.224"
2.229"
2.239"
2.24"
2.25"
2.265"
2.27"
2.285"
2.3"
2.31"
2.33"
2.333"
2.345"
2.35"
2.375"
2.38"
2.4"
2.417"
2.5"
2.58"
2.583"
2.595"
2.6"
2.618"
2.62"
2.625"
2.626"
2.63"
2.64"
2.641"
2.666"
2.667"
2.67"
2.686"
2.69"
2.7"
2.739"
2.75"
2.78"
2.799"
2.8"
2.83"
2.833"
2.85"
2.875"
2.943"
2.961"
3"
3.02"
3.021"
3.04"
3.047"
3.06"
3.08"
3.083"
3.09"
3.1"
3.125"
3.13"
3.141"
3.167"
3.17"
3.177"
3.18"
3.2"
3.22"
3.224"
3.24"
3.25"
3.265"
3.27"
3.28"
3.3"
3.33"
3.333"
3.375"
3.399"
3.4"
3.5"
3.52"
3.54"
3.58"
3.583"
3.6"
3.625"
3.666"
3.667"
3.67"
3.677"
3.68"
3.7"
3.706"
3.71"
3.75"
3.8"
3.833"
3.835"
3.85"
3.875"
3.88"
3.899"
4"
4.015"
4.02"
4.03"
4.047"
4.057"
4.06"
4.083"
4.1"
4.125"
4.166"
4.17"
4.177"
4.2"
4.22"
4.224"
4.236"
4.24"
4.25"
4.3"
4.33"
4.333"
4.353"
4.37"
4.373"
4.375"
4.399"
4.4"
4.5"
4.53"
4.6"
4.625"
4.666"
4.667"
4.7"
4.736"
4.75"
4.8"
4.833"
4.9"
5"
5.057"
5.071"
5.083"
5.1"
5.125"
5.13"
5.167"
5.17"
5.186"
5.19"
5.2"
5.22"
5.224"
5.24"
5.25"
5.28"
5.283"
5.33"
5.333"
5.37"
5.373"
5.375"
5.4"
5.5"
5.56"
5.595"
5.6"
5.625"
5.666"
5.667"
5.7"
5.75"
5.833"
6"
6.013"
6.022"
6.026"
6.035"
6.04"
6.045"
6.083"
6.096"
6.1"
6.115"
6.125"
6.166"
6.2"
6.224"
6.25"
6.28"
6.33"
6.333"
6.354"
6.373"
6.4"
6.5"
6.53"
6.56"
6.6"
6.625"
6.666"
6.7"
6.748"
6.75"
6.8"
6.833"
6.853"
7"
7/1"
7.04"
7.096"
7.1"
7.125"
7.166"
7.2"
7.25"
7.333"
7.354"
7.4"
7.5"
7.53"
7.6"
7.625"
7.666"
7.7"
7.75"
7.78"
7.833"
8"
8.033"
8.05"
8.096"
8.1"
8.125"
8.166"
8.2"
8.224"
8.25"
8.33"
8.333"
8.373"
8.4"
8.5"
8.519"
8.56"
8.6"
8.666"
8.7"
8.746"
8.75"
9"
9.016"
9.033"
9.073"
9.1"
9.125"
9.166"
9.2"
9.25"
9.333"
9.4"
9.5"
9.666"
9.7"
9.75"
9.8"
10.044"
10.1"
10.125"
10.166"
10.2"
10.22"
10.224"
10.25"
10.28"
10.333"
10.373"
10.4"
10.5"
10.545"
10.56"
10.625"
10.666"
10.667"
10.746"
10.75"
11"
11.125"
11.2"
11.25"
11.333"
11.4"
11.5"
11.75"
12"
12.053"
12.125"
12.166"
12.2"
12.25"
12.333"
12.37"
12.373"
12.4"
12.5"
12.56"
12.666"
12.746"
12.75"
12.833"
13.166"
13.2"
13.5"
13.6"
13.667"
14"
14.035"
14.166"
14.2"
14.25"
14.333"
14.4"
14.5"
14.666"
14.8"
15.2"
15.25"
15.333"
15.4"
15.5"
15.666"
16.2"
16.25"
16.333"
16.4"
16.5"
16.56"
16.666"
17.2"
17.5"
18.2"
18.25"
18.333"
18.4"
18.5"
18.666"
18.667"
18.746"
19.6"
20.25"
20.333"
20.4"
20.5"
20.667"
21.25"
21.5"
22.333"
22.4"
22.5"
24.333"
24.4"
24.5"
24.666"
25.5"
25.666"
26.5"
28.5"
28.666"
30.333"
30.5"
30.666"
32.666"
33.5"
35.666"
36.5"
36.666"
36.667"
40.666"
40.667"
7 mm
8.5 mm
9 mm
9.5 mm
10 mm
10.7 mm
11 mm
11.2 mm
11.5 mm
12 mm
13 mm
13.5 mm
13.6 mm
14 mm
14.4 mm
15.2 mm
15.6 mm
16 mm
17 mm
17.1 mm
17.6 mm
18 mm
18.4 mm
19 mm
20 mm
20.38 mm
20.8 mm
21 mm
21.4 mm
21.6 mm
22 mm
22.08 mm
22.4 mm
23 mm
23.5 mm
24 mm
24.21 mm
25 mm
25.5 mm
25.6 mm
26 mm
26.09 mm
26.4 mm
26.5 mm
27 mm
27.2 mm
28 mm
28.5 mm
28.75 mm
29 mm
30 mm
30.4 mm
30.58 mm
31 mm
31.4 mm
31.5 mm
32 mm
32.1 mm
32.6 mm
32.8 mm
33 mm
33.08 mm
33.1 mm
33.3mm
33.6 mm
34 mm
34.5 mm
34.78 mm
35 mm
35.4 mm
36 mm
37 mm
37.6 mm
38 mm
38.77 mm
39 mm
39.6 mm
40 mm
40.5 mm
40.52 mm
40.6 mm
41 mm
41.25 mm
41.6 mm
42 mm
42.8 mm
43 mm
43.5 mm
43.7 mm
44 mm
44.2 mm
44.43 mm
44.8 mm
45 mm
46 mm
46.2 mm
46.4 mm
47 mm
47.1 mm
48 mm
49.5 mm
49.6 mm
50 mm
50.7 mm
51 mm
52 mm
52.5 mm
52.8 mm
53 mm
53.3mm
53.75 mm
54 mm
54.3 mm
54.6 mm
55 mm
55.2 mm
55.5 mm
56 mm
57 mm
57.5 mm
57.6 mm
58 mm
58.15 mm
60 mm
60.75 mm
60.9 mm
61 mm
61.7 mm
62 mm
62.8 mm
63 mm
64 mm
64.5 mm
65 mm
65.2 mm
65.5 mm
65.6 mm
66 mm
66.25 mm
66.3 mm
66.6mm
67 mm
67.2 mm
68 mm
68.1 mm
69 mm
70 mm
70.5 mm
72 mm
74 mm
75 mm
76 mm
77 mm
77.1 mm
78 mm
79.5 mm
80 mm
81 mm
81.2 mm
82 mm
82.5 mm
83 mm
84 mm
85 mm
85.5 mm
86 mm
87 mm
90 mm
90.36 mm
90.67 mm
90.8 mm
92 mm
92.5 mm
93 mm
94 mm
94.5 mm
97 mm
98 mm
100 mm
100.5 mm
101.5 mm
102 mm
103 mm
104 mm
106 mm
107.5 mm
108 mm
113.4 mm
115.5 mm
120 mm
121.8 mm
122 mm
123 mm
124 mm
124.4 mm
126 mm
130 mm
130.5 mm
132.5 mm
136.1 mm
138 mm
145.5 mm
150 mm
151 mm
153 mm
157.5 mm
190 mm
200 mm
250 mm
Gear Pitch Diameter
Gear Pitch Diameter
1/4"
0.292"
0.312"
0.333"
3/8"
0.417"
0.438"
1/2"
0.55"
0.562"
0.563"
0.583"
0.6"
5/8"
0.666"
0.667"
0.688"
3/4"
0.752"
0.8"
0.833"
7/8"
1"
1 1/8"
1.15"
1.167"
1.2"
1 1/4"
1.333"
1 3/8"
1.4"
1 1/2"
1.6"
1 5/8"
1.667"
1.67"
1 3/4"
1.8"
1 7/8"
1.938"
2"
2 1/8"
2 1/4"
2.333"
2.4"
2 1/2"
2.5"
2 5/8"
2.666"
2.667"
2 3/4"
2.8"
3
3"
3.33"
3.333"
3 1/2"
3.666"
3 3/4"
4
4"
4 1/2"
4.8"
5
5"
6
6"
6.67"
8
8"
10
10"
12
12"
14
16
20
24
32
6 mm
7.5 mm
8 mm
8.5 mm
9 mm
9.6 mm
10 mm
10.5 mm
11 mm
12 mm
12.5 mm
12.8 mm
13.6 mm
14 mm
14.4 mm
15 mm
16 mm
16.8 mm
17 mm
18 mm
18.4 mm
19 mm
19.2 mm
20 mm
20.8 mm
21 mm
22 mm
22.5 mm
23 mm
24 mm
25 mm
25.5 mm
25.6 mm
26 mm
27 mm
27.5 mm
28 mm
28.8 mm
30 mm
31 mm
32 mm
33 mm
34 mm
35 mm
36 mm
37 mm
37.5 mm
38 mm
38.4 mm
39 mm
40 mm
42 mm
44 mm
44.8 mm
45 mm
48 mm
50 mm
52 mm
52.5 mm
54 mm
55 mm
56 mm
60 mm
61 mm
63 mm
64 mm
65 mm
67.5 mm
68 mm
70 mm
72 mm
75 mm
76 mm
76.8 mm
80 mm
82.5 mm
85 mm
88 mm
90 mm
95 mm
96 mm
97.5 mm
100 mm
101 mm
105 mm
112.5 mm
120 mm
125 mm
126 mm
127.5 mm
135 mm
142.5 mm
150 mm
200 mm
Overall Width
Overall Width
0.25"
0.264"
0.286"
0.313"
0.315"
0.344"
0.375"
0.406"
0.437"
0.438"
0.489"
0.5"
1/2"
0.56"
0.563"
0.578"
0.583"
0.609"
0.625"
0.74"
0.741"
0.75"
0.774"
0.797"
0.813"
0.842"
0.844"
0.859"
0.86"
0.871"
0.875"
0.927"
0.938"
0.94"
0.973"
0.989"
1"
1.016"
1.019"
1.02"
1.12"
1.125"
1.188"
1.219"
1.245"
1.25"
1.359"
1.36"
1.37"
1.375"
1.484"
1.5"
1.62"
1.625"
1.766"
1.802"
1.857"
1.87"
1.875"
1.88"
2"
2.04"
2.094"
2.13"
2.161"
2.25"
2.313"
2.375"
2.38"
2.5"
6 mm
7 mm
8 mm
9 mm
10 mm
10.8 mm
12 mm
13 mm
13.5 mm
13.7 mm
14 mm
14.5 mm
14.6 mm
15 mm
15.2 mm
16 mm
17 mm
17.7 mm
18 mm
19 mm
19.3 mm
20 mm
20.6 mm
20.7 mm
21 mm
21.1 mm
21.2 mm
22 mm
22.3 mm
23 mm
24 mm
24.1 mm
24.3 mm
24.9 mm
25 mm
25.5 mm
26 mm
26.1 mm
26.4 mm
26.9 mm
27 mm
28.2 mm
29 mm
29.4 mm
29.7 mm
30 mm
30.3 mm
30.5 mm
31 mm
31.9 mm
32 mm
33 mm
33.2 mm
34 mm
34.6 mm
35 mm
36 mm
38 mm
38.7 mm
39.4 mm
40 mm
41 mm
43 mm
44 mm
45 mm
46 mm
51 mm
143 mm
Hub Diameter
Hub Diameter
0.18"
0.188"
0.19"
0.22"
0.25"
0.28"
0.281"
0.31"
0.313"
0.328"
0.34"
0.375"
0.38"
0.4"
0.406"
0.438"
0.46"
0.469"
0.47"
0.5"
1/2"
0.52"
0.53"
0.531"
0.54"
0.547"
0.56"
0.563"
0.59"
0.6"
0.603"
0.609"
0.62"
0.625"
0.63"
0.656"
0.672"
0.688"
0.703"
0.719"
0.72"
0.734"
0.75"
0.78"
0.79"
0.797"
0.81"
0.812"
0.813"
0.84"
0.844"
0.853"
0.859"
0.86"
0.875"
0.906"
0.92"
0.938"
0.969"
0.97"
0.984"
0.99"
1"
1.063"
1.109"
1.12"
1.125"
1.188"
1.19"
1.2"
1.219"
1.22"
1.25"
1.266"
1.313"
1.34"
1.344"
1.359"
1.37"
1.375"
1.391"
1.4"
1.406"
1.438"
1.439"
1.44"
1.47"
1.5"
1.531"
1.56"
1.563"
1.609"
1.62"
1.625"
1.641"
1.65"
1.69"
1.7"
1.719"
1.72"
1.735"
1.75"
1.781"
1.812"
1.813"
1.844"
1.87"
1.875"
1.938"
1.94"
2"
2.016"
2.06"
2.063"
2.109"
2.12"
2.125"
2.156"
2.188"
2.219"
2.235"
2.25"
2.266"
2.313"
2.375"
2.406"
2.485"
2.5"
2.56"
2.563"
2.594"
2.625"
2.735"
2.75"
2.766"
2.844"
2.868"
2.875"
2.88"
2.95"
2.985"
3"
3.016"
3.06"
3.125"
3.235"
3.236"
3.237"
3.238"
3.239"
3.25"
3.266"
3.375"
3.485"
3.5"
3.735"
3.75"
3.766"
3.88"
3.985"
4"
4.125"
4.25"
4.266"
4.375"
4.485"
4.5"
4.563"
4.625"
4.735"
4.75"
4.766"
4.985"
5"
5.063"
5.125"
5.235"
5.485"