1/5 Pitch Timing Belt Pulleys
3/8 Belt Width       No Flanges     Aluminum

| Part # |
# Grooves |
Pitch Dia |
Outside Dia |
Overall Lg |
Hub Dia ±0.015 |
Bore +0.001 -0 |
Screw |
# Scws |
| 10N3706-XA |
10 |
0.637 |
0.617 |
0.812 |
0.438 |
0.1875 |
6-40 |
1 |
| 10N3708-XA |
10 |
" |
" |
" |
" |
0.2500 |
8-32 |
2 |
| 11N3706-XA |
11 |
0.700 |
0.680 |
" |
0.500 |
0.1875 |
6-40 |
1 |
| 11N3708-XA |
11 |
" |
" |
" |
" |
0.2500 |
8-32 |
2 |
| 12N3706-XA |
12 |
0.764 |
0.744 |
" |
0.563 |
0.1875 |
6-40 |
1 |
| 12N3708-XA |
12 |
" |
" |
" |
" |
0.2500 |
8-32 |
2 |
| 14N3708-XA |
14 |
0.891 |
0.871 |
" |
0.625 |
0.2500 |
" |
" |
| 14N3710-XA |
14 |
" |
" |
" |
" |
0.3125 |
" |
" |
| 15N3708-XA |
15 |
0.955 |
0.935 |
0.875 |
0.688 |
0.2500 |
" |
" |
| 15N3710-XA |
15 |
" |
" |
" |
" |
0.3125 |
" |
" |
| 15N3712-XA |
15 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 16N3708-XA |
16 |
1.019 |
0.999 |
" |
0.750 |
0.2500 |
8-32 |
" |
| 16N3710-XA |
16 |
" |
" |
" |
" |
0.3125 |
" |
" |
| 17N3708-XA |
17 |
1.082 |
1.062 |
" |
0.812 |
0.2500 |
" |
" |
| 18N3708-XA |
18 |
1.146 |
1.126 |
" |
0.875 |
0.2500 |
" |
" |
| 18N3710-XA |
18 |
" |
" |
" |
" |
0.3125 |
" |
" |
| 18N3712-XA |
18 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 19N3708-XA |
19 |
1.210 |
1.190 |
" |
" |
0.2500 |
8-32 |
" |
| 20N3708-XA |
20 |
1.273 |
1.253 |
0.938 |
0.938 |
0.2500 |
" |
" |
| 20N3710-XA |
20 |
" |
" |
" |
" |
0.3125 |
" |
" |
| 20N3712-XA |
20 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 21N3708-XA |
21 |
1.337 |
1.317 |
" |
1.000 |
0.2500 |
8-32 |
" |
| 21N3710-XA |
21 |
" |
" |
" |
" |
0.3125 |
" |
" |
| 22N3708-XA |
22 |
1.401 |
1.381 |
" |
1.063 |
0.2500 |
" |
" |
| 22N3710-XA |
22 |
" |
" |
" |
" |
0.3125 |
" |
" |
| 22N3712-XA |
22 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 23N3708-XA |
23 |
1.464 |
1.444 |
" |
1.125 |
0.2500 |
8-32 |
" |
| 24N3708-XA |
24 |
1.528 |
1.508 |
" |
1.188 |
0.2500 |
" |
" |
| 24N3710-XA |
24 |
" |
" |
" |
" |
0.3125 |
" |
" |
| 24N3712-XA |
24 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 25N3708-XA |
25 |
1.592 |
1.572 |
" |
1.250 |
0.2500 |
8-32 |
" |
| 25N3712-XA |
25 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 27N3710-XA |
27 |
1.719 |
1.699 |
0.938 |
1.250 |
0.3125 |
8-32 |
2 |
| 28N3708-XA |
28 |
1.783 |
1.763 |
" |
" |
0.2500 |
" |
" |
| 28N3710-XA |
28 |
" |
" |
" |
" |
0.3125 |
" |
" |
| 28N3712-XA |
28 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 29N3710-XA |
29 |
1.846 |
1.826 |
" |
1.312 |
0.3125 |
8-32 |
" |
| 30N3708-XA |
30 |
1.910 |
1.890 |
" |
1.375 |
0.2500 |
" |
" |
| 30N3710-XA |
30 |
" |
" |
" |
" |
0.3125 |
" |
" |
| 30N3712-XA |
30 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 32N3710-XA |
32 |
2.037 |
2.017 |
1.000 |
1.500 |
0.3125 |
8-32 |
" |
| 32N3712-XA |
32 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 32N3716-XA |
32 |
" |
" |
" |
" |
0.5000 |
1/4-20 |
" |
| 36N3710-XA |
36 |
2.292 |
2.272 |
" |
" |
0.3125 |
8-32 |
" |
| 36N3712-XA |
36 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 36N3716-XA |
36 |
" |
" |
" |
" |
0.5000 |
1/4-20 |
" |
| 40N3710-XA |
40 |
2.546 |
2.526 |
" |
" |
0.3125 |
8-32 |
" |
| 40N3712-XA |
40 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 40N3716-XA |
40 |
" |
" |
" |
" |
0.5000 |
1/4-20 |
" |
| 42N3710-XA |
42 |
2.674 |
2.654 |
" |
" |
0.3125 |
8-32 |
" |
| 42N3712-XA |
42 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 42N3716-XA |
42 |
" |
" |
" |
" |
0.5000 |
1/4-20 |
" |
| 44N3710-XA |
44 |
2.801 |
2.871 |
" |
" |
0.3125 |
8-32 |
" |
| 44N3712-XA |
44 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 44N3716-XA |
44 |
" |
" |
" |
" |
0.5000 |
1/4-20 |
" |
| 45N3710-XA |
45 |
2.865 |
2.845 |
" |
" |
0.3125 |
8-32 |
" |
| 45N3712-XA |
45 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 45N3716-XA |
45 |
" |
" |
" |
" |
0.5000 |
1/4-20 |
" |
| 48N3710-XA |
48 |
3.056 |
3.036 |
" |
" |
0.3125 |
8-32 |
" |
| 48N3712-XA |
48 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 48N3716-XA |
48 |
" |
" |
" |
" |
0.5000 |
1/4-20 |
" |
| 50N3710-XA |
50 |
3.183 |
3.163 |
" |
" |
0.3125 |
8-32 |
" |
| 50N3712-XA |
50 |
" |
" |
" |
" |
0.3750 |
10-32 |
" |
| 50N3716-XA |
50 |
" |
" |
" |
" |
0.5000 |
1/4-20 |
" |
| 60N3712-XA |
60 |
3.820 |
3.800 |
" |
" |
0.3750 |
10-32 |
" |
| 60N3716-XA |
60 |
" |
" |
" |
" |
0.5000 |
1/4-20 |
" |
| 72N3712-XA |
72 |
4.584 |
4.564 |
" |
" |
0.3750 |
10-32 |
" |
| 72N3716-XA |
72 |
" |
" |
" |
" |
0.5000 |
1/4-20 |
" |