1/8" (3.2 mm) Diameter Lead Screw. Diameter Code 012
| 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 |
|
0.129 |
3.28 |
0.093 |
2.36 |
44 |
| 0.039 |
1 |
0039 |
|
0.129 |
3.28 |
0.094 |
2.39 |
57 |
| 0.048 |
1.22 |
0048 |
|
0.129 |
3.28 |
0.093 |
2.36 |
61 |
| 0.075 |
1.91 |
0075 |
|
0.129 |
3.28 |
0.093 |
2.36 |
70 |
| 0.096 |
2.44 |
0096 |
√ |
0.129 |
3.28 |
0.093 |
2.36 |
75 |
| 0.125 |
3.18 |
0125 |
LH Only |
0.125 |
3.18 |
0.078 |
1.98 |
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.
0.132" (3.3 mm)) Diameter Lead Screw. Diameter Code 013
| Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
| in |
mm |
|
|
In |
mm |
in |
mm |
|
| 0.02 |
0.5 |
0020 |
|
0.132 |
3.35 |
0.104 |
2.64 |
42 |
| 0.039 |
1 |
0039 |
|
0.132 |
3.35 |
0.08 |
2.03 |
61 |
| 0.079 |
2.00. |
0079 |
|
0.132 |
3.35 |
0.08 |
2.03 |
75 |
| 0.157 |
4 |
0157 |
|
0.132 |
3.35 |
0.08 |
2.03 |
84 |
| 0.315 |
8 |
0315 |
|
0.132 |
3.35 |
0.08 |
2.03 |
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.
9/64" (3.6 mm) Diameter Lead Screw. Diameter Code 014
| Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
| in |
mm |
|
|
in |
mm |
in |
mm |
|
| 0.012 |
0.3 |
0012 |
|
0.14 |
3.56 |
0.123 |
3.12 |
26 |
| 0.024 |
0.61 |
0024 |
|
0.14 |
3.56 |
0.105 |
2.67 |
43 |
| 0.048 |
1.22 |
0048 |
|
0.14 |
3.56 |
0.081 |
2.06 |
62 |
| 0.096 |
2.44 |
0096 |
|
0.14 |
3.56 |
0.081 |
2.06 |
75 |
| 0.394 |
10 |
0394 |
|
0.14 |
3.56 |
0.102 |
2.59 |
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.
5/32" (4 mm) Diameter Lead Screw. Diameter Code 016
| Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
| in |
mm |
|
|
in |
mm |
in |
mm |
|
| 0.033 |
0.84 |
0033 |
√ |
0.156 |
3.96 |
0.116 |
2.95 |
45 |
| 0.05 |
1.27 |
0050 |
LH Only |
0.156 |
3.96 |
0.096 |
2.44 |
59 |
| 0.094 |
2.39 |
0094 |
|
0.164 |
4.17 |
0.128 |
3.25 |
67 |
| 0.125 |
3.18 |
0125 |
|
0.168 |
4.27 |
0.13 |
3.3 |
74 |
| 0.25 |
6.35 |
0250 |
|
0.156 |
3.96 |
0.13 |
3.3 |
83 |
| 0.375 |
9.53 |
0375 |
|
0.156 |
3.96 |
0.13 |
3.3 |
85 |
| 0.5 |
12.7 |
0500 |
|
0.156 |
3.96 |
0.13 |
3.3 |
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.
3/16" (5 mm) Diameter Lead Screw. Diameter Code 018
| Lead |
Lead Code |
Left Hand Avail. |
Outside Diameter (For Reference) |
Root Diameter (For Reference) |
Efficiency %* |
| in |
mm |
|
|
in |
mm |
in |
mm |
|
| 0.02 |
0.5 |
0020 |
|
0.188 |
4.78 |
0.163 |
4.14 |
30 |
| 0.025 |
0.64 |
0025 |
|
0.188 |
4.78 |
0.15 |
3.81 |
39 |
| 0.039 |
1 |
0039 |
|
0.188 |
4.78 |
0.144 |
3.66 |
47 |
| 0.05 |
1.27 |
0050 |
|
0.188 |
4.78 |
0.124 |
3.15 |
58 |
| 0.1 |
2.54 |
0100 |
|
0.188 |
4.78 |
0.136 |
3.45 |
69 |
| 0.1875 |
4.76 |
0188 |
|
0.188 |
4.78 |
0.167 |
4.24 |
78 |
| 0.2 |
5.08 |
0200 |
|
0.188 |
4.78 |
0.124 |
3.15 |
82 |
| 0.375 |
9.53 |
0375 |
|
0.188 |
4.78 |
0.161 |
4.09 |
84 |
| 0.4 |
10.16 |
0400 |
|
0.188 |
4.78 |
0.124 |
3.15 |
84 |
| 0.427 |
10.85 |
0427 |
|
0.188 |
4.78 |
0.162 |
4.11 |
85 |
| 0.5 |
12.7 |
0500 |
√ |
0.188 |
4.78 |
0.142 |
3.61 |
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.
7/32" (5.6 mm) Diameter Lead Screw. Diameter Code 021
| 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 |
|
0.218 |
5.54 |
0.181 |
4.6 |
31 |
| 0.03125 |
0.79 |
0031 |
|
0.204 |
5.18 |
0.16 |
4.06 |
39 |
| 0.048 |
1.22 |
0048 |
|
0.216 |
5.49 |
0.156 |
3.96 |
50 |
| 0.05 |
1.27 |
0050 |
|
0.2 |
5.08 |
0.135 |
3.43 |
52 |
| 0.0625 |
1.59 |
0063 |
|
0.218 |
5.54 |
0.142 |
3.61 |
60 |
| 0.096 |
2.44 |
0096 |
|
0.218 |
5.54 |
0.156 |
3.96 |
66 |
| 0.192 |
4.88 |
0192 |
|
0.218 |
5.54 |
0.156 |
3.96 |
78 |
| 0.25 |
6.35 |
0250 |
√ |
0.204 |
5.18 |
0.14 |
3.56 |
81 |
| 0.384 |
9.75 |
0384 |
|
0.218 |
5.54 |
0.159 |
4.04 |
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.
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.