1/4" (6 mm) Diameter Lead Screw. Diameter Code 025
Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
in |
mm |
|
|
in |
mm |
in |
mm |
|
0.024 |
0.61 |
0024 |
|
0.25 |
6.35 |
0.218 |
5.54 |
28 |
0.025 |
0.64 |
0025 |
|
0.25 |
6.35 |
0.214 |
5.44 |
30 |
0.03125 |
0.79 |
0031 |
|
0.25 |
6.35 |
0.208 |
5.28 |
34 |
0.039 |
1 |
0039 |
|
0.25 |
6.35 |
0.19 |
4.83 |
40 |
0.048 |
1.22 |
0048 |
|
0.25 |
6.35 |
0.19 |
4.83 |
45 |
0.05 |
1.27 |
0050 |
√ |
0.25 |
6.35 |
0.191 |
4.85 |
46 |
0.059 |
1.5 |
0059 |
|
0.25 |
6.35 |
0.172 |
4.37 |
52 |
0.0625 |
1.59 |
0063 |
|
0.25 |
6.35 |
0.17 |
4.32 |
52 |
0.079 |
2 |
0079 |
|
0.25 |
6.35 |
0.17 |
4.32 |
59 |
0.096 |
2.44 |
0096 |
|
0.25 |
6.35 |
0.19 |
4.83 |
61 |
0.1 |
2.54 |
0100 |
|
0.25 |
6.35 |
0.19 |
4.83 |
62 |
0.118 |
3 |
0118 |
|
0.25 |
6.35 |
0.175 |
4.45 |
68 |
0.125 |
3.18 |
0125 |
|
0.25 |
6.35 |
0.19 |
4.83 |
67 |
0.197 |
5 |
0197 |
|
0.25 |
6.35 |
0.172 |
4.37 |
72 |
0.2 |
5.08 |
0200 |
|
0.25 |
6.35 |
0.17 |
4.32 |
65 |
0.25 |
6.35 |
0250 |
√ |
0.25 |
6.35 |
0.168 |
4.27 |
79 |
0.3125 |
7.94 |
0313 |
|
0.25 |
6.35 |
0.184 |
4.67 |
81 |
0.333 |
8.46 |
0333 |
|
0.25 |
6.35 |
0.17 |
4.32 |
82 |
0.394 |
10 |
0394 |
|
0.25 |
6.35 |
0.17 |
4.32 |
78 |
0.4 |
10.16 |
0400 |
|
0.25 |
6.35 |
0.17 |
4.32 |
84 |
0.5 |
12.7 |
0500 |
√ |
0.25 |
6.35 |
0.169 |
4.29 |
85 |
0.75 |
19.05 |
0750 |
|
0.25 |
6.35 |
0.17 |
4.32 |
86 |
1 |
25.4 |
1000 |
√ |
0.25 |
6.35 |
0.17 |
4.32 |
84 |
*Listed efficiency are theoretical values based on Kerkote
® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
5/16" (8 mm) Diameter Lead Screw. Diameter Code 031
Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
in |
mm |
|
|
in |
mm |
in |
mm |
|
0.057 |
1.44 |
0057 |
|
0.315 |
8 |
0.243 |
6.71 |
43 |
0.0741 |
1.88 |
0074 |
|
0.312 |
7.92 |
0.211 |
5.36 |
51 |
0.111 |
2.82 |
0111 |
|
0.312 |
7.92 |
232 |
5.89 |
60 |
0.167 |
4.24 |
0167 |
|
0.312 |
7.92 |
0.211 |
5.36 |
69 |
0.25 |
6.35 |
0250 |
|
0.312 |
7.92 |
0.234 |
5.94 |
76 |
0.5 |
12.7 |
0500 |
√ |
0.312 |
7.92 |
0.232 |
5.89 |
83 |
0.8 |
20.32 |
0800 |
|
0.306 |
7.77 |
0.243 |
6.17 |
86 |
*Listed efficiency are theoretical values based on Kerkote
® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
3/8" (10 mm) Diameter Lead Screw. Diameter code 037
Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
in |
mm |
|
|
in |
mm |
in |
mm |
|
0.025 |
0.64 |
0025 |
|
0.375 |
9.53 |
0.337 |
8.56 |
21 |
0.039 |
1 |
0039 |
|
0.394 |
10.01 |
0.35 |
8.89 |
28 |
0.04167 |
1.06 |
0042 |
|
0.375 |
9.53 |
0.32 |
8.13 |
34 |
0.05 |
1.27 |
0050 |
√ |
0.375 |
9.53 |
0.301 |
7.65 |
36 |
0.055 |
1.4 |
0055 |
|
0.375 |
9.53 |
0.303 |
7.7 |
38 |
0.059 |
1.5 |
0059 |
√ |
0.389 |
9.88 |
0.313 |
7.95 |
38 |
0.0625 |
1.59 |
0063 |
√ |
0.375 |
9.53 |
0.295 |
7.49 |
41 |
0.068 |
1.73 |
0068 |
|
0.388 |
9.86 |
0.295 |
7.49 |
42 |
0.079 |
2 |
0079 |
|
0.375 |
9.53 |
0.264 |
6.71 |
47 |
0.0833 |
2.12 |
0083 |
|
0.375 |
9.53 |
0.293 |
7.44 |
48 |
0.1 |
2.54 |
0100 |
√ |
0.375 |
9.53 |
0.266 |
6.76 |
53 |
0.125 |
3.18 |
0125 |
|
0.375 |
9.53 |
0.295 |
7.49 |
59 |
0.157 |
4 |
0157 |
|
0.375 |
9.53 |
0.274 |
6.96 |
65 |
0.1667 |
4.23 |
0167 |
|
0.371 |
9.42 |
0.261 |
6.63 |
61 |
0.197 |
5 |
0197 |
|
0.375 |
9.53 |
0.266 |
6.76 |
69 |
0.2 |
5.08 |
0200 |
√ |
0.375 |
9.53 |
0.266 |
6.76 |
69 |
0.25 |
6.35 |
0250 |
|
0.375 |
9.53 |
0.268 |
6.81 |
70 |
0.3 |
7.62 |
0300 |
|
0.375 |
9.53 |
0.255 |
6.48 |
76 |
0.333 |
8.46 |
0333 |
|
0.375 |
9.53 |
0.245 |
6.22 |
78 |
0.363 |
9.22 |
0363 |
√ |
0.375 |
9.53 |
0.26 |
6.6 |
79 |
0.375 |
9.53 |
0375 |
|
0.375 |
9.53 |
0.265 |
6.73 |
79 |
0.394 |
10 |
0394 |
|
0.375 |
9.53 |
0.26 |
6.6 |
79 |
0.4 |
10.16 |
0400 |
|
0.375 |
9.53 |
0.293 |
7.44 |
79 |
0.472 |
12 |
0472 |
|
0.388 |
9.86 |
0.287 |
7.29 |
82 |
0.5 |
12.7 |
0500 |
√ |
0.388 |
9.86 |
0.265 |
6.73 |
81 |
0.667 |
16.94 |
0667 |
|
0.375 |
9.53 |
0.273 |
6.93 |
83 |
0.75 |
19.05 |
0750 |
|
0.388 |
9.86 |
0.273 |
6.93 |
84 |
0.984 |
25 |
0984 |
|
0.375 |
9.53 |
0.262 |
6.65 |
84 |
1 |
25.4 |
1000 |
|
0.383 |
9.73 |
0.254 |
6.45 |
84 |
1.2 |
30.48 |
1200 |
√ |
0.383 |
9.73 |
0.254 |
6.45 |
84 |
1.25 |
31.75 |
1250 |
|
0.375 |
9.53 |
0.278 |
7.06 |
84 |
1.5 |
38.1 |
1500 |
|
0.375 |
9.53 |
0.264 |
6.71 |
83 |
*Listed efficiency are theoretical values based on Kerkote
® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
7/16" (11 mm) Diameter Lead Screw. Diameter Code 043
Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
in |
mm |
|
|
in |
mm |
in |
mm |
|
0.05 |
1.27 |
0050 |
|
0.437 |
11.1 |
0.362 |
9.19 |
30 |
0.0625 |
1.59 |
0063 |
√ |
0.436 |
11.07 |
0.358 |
9.09 |
38 |
0.079 |
2 |
0079 |
|
0.472 |
11.99 |
0.374 |
9.5 |
42 |
0.111 |
2.82 |
0111 |
|
0.437 |
11.1 |
0.327 |
8.31 |
52 |
0.118 |
3 |
0118 |
|
0.438 |
11.13 |
0.363 |
9.22 |
52 |
0.125 |
3.18 |
0125 |
|
0.438 |
11.13 |
0.357 |
9.07 |
54 |
0.197 |
5 |
0197 |
|
0.438 |
11.13 |
0.315 |
8 |
65 |
0.263 |
6 |
0236 |
|
0.433 |
11 |
0.313 |
7.95 |
70 |
0.25 |
6.35 |
0250 |
|
0.442 |
11.23 |
0.325 |
8.26 |
70 |
0.307 |
7.8 |
0307 |
|
0.445 |
11.3 |
0.343 |
8.71 |
73 |
0.325 |
8.26 |
0325 |
|
0.444 |
11.28 |
0.342 |
8.69 |
74 |
0.394 |
10 |
0394 |
|
0.446 |
11.33 |
0.331 |
8.41 |
78 |
0.472 |
12 |
0472 |
|
0.438 |
11.13 |
0.318 |
8.08 |
80 |
0.5 |
12.7 |
0500 |
|
0.452 |
11.48 |
0.327 |
8.31 |
80 |
0.615 |
15.62 |
0615 |
|
0.475 |
12.07 |
0.376 |
9.55 |
82 |
*Listed efficiency are theoretical values based on Kerkote
® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
1/2" (13 mm) Diameter Lead Screw. Diameter Code 050
Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
in |
mm |
|
|
in |
mm |
in |
mm |
|
0.05 |
1.27 |
0050 |
|
0.495 |
12.57 |
0.433 |
11 |
29 |
0.079 |
2 |
0079 |
|
0.473 |
12.01 |
0.355 |
9.02 |
41 |
0.098 |
2.5 |
0098 |
|
0.5 |
12.7 |
0.383 |
9.73 |
46 |
0.1 |
2.54 |
0100 |
√ |
0.49 |
12.45 |
0.364 |
9.25 |
46 |
0.125 |
3.18 |
0125 |
|
0.5 |
12.7 |
0.374 |
9.5 |
51 |
0.157 |
4 |
0157 |
|
0.5 |
12.7 |
0.384 |
9.75 |
58 |
0.16 |
4.06 |
0160 |
|
0.5 |
12.7 |
0.388 |
9.86 |
67 |
0.1667 |
4.23 |
0167 |
|
0.5 |
12.7 |
0.384 |
9.75 |
58 |
0.197 |
5 |
0197 |
|
0.5 |
12.7 |
0.365 |
9.27 |
62 |
0.2 |
5.08 |
0200 |
√ |
0.492 |
12.5 |
0.366 |
9.3 |
63 |
0.25 |
6.35 |
0250 |
|
0.5 |
12.7 |
0.382 |
9.7 |
67 |
0.333 |
8.46 |
0333 |
√ |
0.497 |
12.62 |
0.362 |
9.19 |
73 |
0.394 |
10 |
0394 |
|
0.497 |
12.62 |
0.362 |
9.19 |
76 |
0.4 |
10.16 |
0400 |
|
0.497 |
12.62 |
0.364 |
9.25 |
76 |
0.5 |
12.7 |
0500 |
|
0.488 |
12.4 |
0.352 |
8.94 |
79 |
0.63 |
16 |
0630 |
|
0.5 |
12.7 |
0.374 |
9.5 |
80 |
0.75 |
19.05 |
0750 |
|
0.525 |
13.34 |
0.399 |
10.13 |
83 |
0.8 |
20.32 |
0800 |
|
0.5 |
12.7 |
0.37 |
9.4 |
83 |
0.984 |
25 |
0984 |
|
0.5 |
12.7 |
0.369 |
9.37 |
84 |
1 |
25.4 |
1000 |
√ |
0.49 |
12.45 |
0.372 |
9.45 |
84 |
1.5 |
38.1 |
1500 |
|
0.49 |
12.45 |
0.374 |
9.5 |
85 |
2 |
50.8 |
2000 |
|
0.488 |
12.4 |
0.378 |
9.6 |
87 |
*Listed efficiency are theoretical values based on Kerkote
® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
5/8" (16 mm) Diameter Lead Screw. Diameter Code 062
Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
in |
mm |
|
|
in |
mm |
in |
mm |
|
0.1 |
2.54 |
0100 |
|
0.615 |
15.62 |
0.498 |
12.65 |
40 |
0.125 |
3.18 |
0125 |
√ |
0.625 |
15.88 |
0.47 |
11.94 |
45 |
0.2 |
5.08 |
0200 |
|
0.625 |
15.88 |
0.495 |
12.57 |
53 |
0.25 |
6.35 |
0250 |
|
0.625 |
15.88 |
0.469 |
11.91 |
63 |
0.315 |
8 |
0315 |
|
0.627 |
15.93 |
0.493 |
12.52 |
68 |
0.41 |
10.41 |
0410 |
√ |
0.625 |
15.88 |
0.481 |
12.22 |
72 |
0.5 |
12.7 |
0500 |
√ |
0.625 |
15.88 |
0.478 |
12.14 |
76 |
0.63 |
16 |
0630 |
|
0.625 |
15.88 |
0.491 |
12.47 |
78 |
1 |
25.4 |
1000 |
|
0.625 |
15.88 |
0.481 |
12.22 |
83 |
1.5 |
38.1 |
1500 |
|
0.625 |
15.88 |
0.499 |
12.67 |
85 |
1.575 |
40.01 |
1575 |
√ |
0.625 |
15.88 |
0.499 |
12.67 |
86 |
2 |
50.8 |
2000 |
√ |
0.625 |
15.88 |
0.499 |
12.67 |
86 |
*Listed efficiency are theoretical values based on Kerkote
® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
3/4" (19 mm) Diameter Lead Screw. Diameter Code 075
Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
in |
mm |
|
|
in |
mm |
in |
mm |
|
0.0625 |
1.59 |
0063 |
|
0.75 |
19.05 |
0.671 |
17.04 |
25 |
0.098 |
2.5 |
0098 |
|
0.742 |
18.85 |
0.626 |
15.9 |
35 |
0.1 |
2.54 |
0100 |
√ |
0.746 |
18.95 |
0.624 |
15.85 |
35 |
0.1667 |
4.23 |
0167 |
|
0.727 |
18.47 |
0.645 |
16.38 |
47 |
0.197 |
5 |
0197 |
|
0.745 |
18.92 |
0.624 |
15.85 |
51 |
0.2 |
5.08 |
0200 |
|
0.741 |
18.82 |
0.632 |
16.05 |
52 |
0.25 |
6.35 |
0250 |
|
0.731 |
18.57 |
0.639 |
16.23 |
57 |
0.276 |
7 |
0276 |
|
0.75 |
19.05 |
0.624 |
15.85 |
59 |
0.333 |
8.46 |
0333 |
|
0.75 |
19.05 |
0.624 |
15.85 |
64 |
0.394 |
10 |
0394 |
|
0.745 |
18.92 |
0.619 |
15.72 |
67 |
0.5 |
12.7 |
0500 |
|
0.744 |
18.9 |
0.623 |
15.82 |
73 |
0.551 |
14 |
0551 |
|
0.75 |
19.05 |
0.624 |
15.85 |
73 |
0.591 |
15 |
0591 |
|
0.749 |
19.02 |
0.623 |
15.82 |
74 |
0.709 |
18 |
0709 |
|
0.78 |
19.81 |
0.65 |
16.51 |
77 |
0.748 |
19 |
0748 |
|
0.672 |
17.07 |
0.547 |
13.89 |
80 |
0.787 |
20 |
0787 |
|
0.78 |
19.81 |
0.648 |
16.46 |
78 |
0.8 |
20.32 |
0800 |
|
0.75 |
19.05 |
0.618 |
15.7 |
79 |
0.945 |
24 |
0945 |
|
0.734 |
18.64 |
0.633 |
16.08 |
80 |
1 |
25.4 |
1000 |
√ |
0.743 |
18.87 |
0.619 |
15.72 |
81 |
1.5 |
38.1 |
1500 |
√ |
0.712 |
18.08 |
0.59 |
14.99 |
84 |
1.969 |
50 |
1969 |
|
0.751 |
19.08 |
0.62 |
15.75 |
84 |
2 |
50.8 |
2000 |
√ |
0.742 |
18.85 |
0.611 |
15.52 |
84 |
2.4 |
60.96 |
2400 |
√ |
0.75 |
19.05 |
0.62 |
15.75 |
84 |
3.622 |
92 |
3622 |
√ |
0.75 |
19.05 |
0.634 |
16.1 |
87 |
*Listed efficiency are theoretical values based on Kerkote
® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
7/8" (22 mm) Diameter Lead Screw. Diameter Code 087
Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
in |
mm |
|
|
in |
mm |
in |
mm |
|
0.2 |
5.08 |
0200 |
√ |
0.87 |
22.1 |
0.742 |
18.85 |
48 |
0.236 |
6 |
0236 |
|
0.848 |
21.54 |
0.773 |
19.63 |
52 |
0.25 |
6.35 |
0250 |
|
0.875 |
22.23 |
0.749 |
19.02 |
53 |
0.394 |
10 |
0394 |
|
0.875 |
22.23 |
0.741 |
18.82 |
65 |
0.5 |
12.7 |
0500 |
|
0.862 |
21.89 |
0.744 |
18.9 |
69 |
0.630 |
16 |
0630 |
|
0.875 |
22.23 |
0.741 |
18.82 |
73 |
0.667 |
16.94 |
0667 |
|
0.871 |
22.12 |
0.745 |
18.92 |
74 |
0.787 |
20 |
0787 |
|
0.875 |
22.23 |
0.741 |
18.82 |
78 |
0.945 |
24 |
0945 |
|
0.875 |
22.23 |
0.741 |
18.82 |
79 |
1 |
25.4 |
1000 |
|
0.871 |
22.12 |
0.742 |
18.85 |
80 |
*Listed efficiency are theoretical values based on Kerkote
® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
15/16" (24 mm) Diameter Lead Screw. Diameter Code 093
Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
in |
mm |
|
|
in |
mm |
in |
mm |
|
0.05 |
1.27 |
0050 |
LH Only |
0.938 |
23.83 |
0.874 |
22.2 |
17 |
2 |
50.8 |
2000 |
|
0.927 |
23.55 |
0.815 |
20.7 |
85 |
3 |
76.2 |
3000 |
|
0.939 |
23.85 |
0.803 |
20.4 |
86 |