Code |
Basic diameter d |
25.4mm teeth per |
Pitch p |
d1 |
l |
L |
a |
12 |
||
G1/16 |
G1/16D |
Rp1/16 |
7.723 |
28 |
0.970 |
5.6 |
14 |
52 |
4.5 |
7 |
G1/8 |
G1/8D |
Rp1/8 |
9.728 |
28 |
0.970 |
8.0 |
15 |
59 |
6.3 |
9 |
G1/4 |
G1/4D |
Rp1/4 |
13.157 |
19 |
1.337 |
10.0 |
19 |
67 |
8.0 |
11 |
G3/8 |
G3/8D |
Rp3/8 |
16.662 |
19 |
1.337 |
12.5 |
21 |
75 |
10.0 |
13 |
G1/2 |
G1/2D |
Rp1/2 |
20.955 |
14 |
1.814 |
16.0 |
26 |
87 |
12.5 |
16 |
(G5/8) |
(G5/8D) |
- |
22.911 |
14 |
1.814 |
180 |
26 |
91 |
14.0 |
18 |
G3/4 |
G3/4D |
Rp3/4 |
26.441 |
14 |
1.814 |
20.0 |
28 |
96 |
16.0 |
20 |
(G7/8) |
(G7/8D) |
- |
30.201 |
11 |
2.309 |
22.4 |
29 |
102 |
18.0 |
22 |
G1 |
G1D |
Rp1 |
33.249 |
11 |
2.309 |
25.0 |
33 |
109 |
20.0 |
24 |
(G1 1/8) |
(G1 1/8D) |
- |
37.897 |
11 |
2.309 |
28.0 |
34 |
116 |
22.4 |
26 |
G1 1/4 |
G1 1/4D |
Rp1 l/4 |
41.910 |
11 |
2.309 |
31.5 |
36 |
119 |
25.0 |
28 |
G1 1/2 |
G1 1/2D |
Rp1 l/2 |
47.803 |
11 |
2.309 |
35.5 |
37 |
125 |
28.0 |
31 |
(G1 3/4) |
(G1 3/4D) |
- |
53.746 |
11 |
2.309 |
35.5 |
39 |
132 |
28.0 |
31 |
G2 |
G2D |
Rp2 |
59.614 |
11 |
2.309 |
40.0 |
41 |
140 |
31.5 |
34 |
(G21/4) |
(G21/4D) |
- |
65.710 |
11 |
2.309 |
40.0 |
42 |
142 |
31.5 |
34 |
G2 1/2 |
G2 1/2D |
Rp2 1/2 |
75.184 |
11 |
2.309 |
46.0 |
45 |
153 |
35.5 |
38 |
(G2 3/4) |
(G2 3/4) |
- |
81.534 |
11 |
2.309 |
50.0 |
46 |
163 |
40.0 |
42 |
G3 |
G3D |
Rp3 |
87.884 |
11 |
2.309 |
50.0 |
48 |
164 |
40.0 |
42 |
G3 1/2 |
G3 1/2D |
Rp3 l/2 |
100.330 |
11 |
2.309 |
63.0 |
50 |
173 |
50.0 |
51 |
G4 |
G4D |
Rp4 |
113.030 |
11 |
2.309 |
71.0 |
53 |
185 |
56.0 |
56 |
NOTE: Dimensions in brackets try not to use.