Model Engineer
| Size |
Outside Dia Inch |
Tpi |
Pitch Inch |
Core Dia Inch |
Thread Depth Thou |
Tapping Drill Size Inch |
Tapping Drill mm |
Letter Or Number |
|
1/8
|
0.125
|
32
|
0.031
|
|
20
|
0.093
|
2.4
|
3/32
|
|
5/32
|
0.156
|
32
|
0.031
|
|
20
|
0.124
|
3.2
|
1/8
|
|
3/16
|
0.188
|
32
|
0.031
|
|
20
|
0.156
|
4.0
|
|
|
7/32
|
0.219
|
32
|
0.031
|
|
20
|
0.187
|
4.7
|
|
|
1/4
|
0.250
|
32
|
0.031
|
0.210
|
20
|
0.213
|
5.5
|
3
|
|
9/32
|
0.281
|
32
|
0.031
|
0.241
|
20
|
0.246
|
6.3
|
D
|
|
5/16
|
0.313
|
32
|
0.031
|
0.273
|
20
|
0.277
|
7.1
|
J
|
|
3/8
|
0.375
|
32
|
0.031
|
0.335
|
20
|
0.339
|
8.6
|
R
|
|
7/16
|
0.438
|
32
|
0.031
|
0.398
|
20
|
0.404
|
10.2
|
Y
|
|
1/2
|
0.500
|
32
|
0.031
|
0.460
|
20
|
0.469
|
11.8
|
15/32
|
|
1/8
|
0.125
|
40
|
0.025
|
0.093
|
16
|
0.094
|
2.4
|
3/32
|
|
5/32
|
0.156
|
40
|
0.025
|
0.125
|
16
|
0.129
|
3.3
|
30
|
|
3/16
|
0.188
|
40
|
0.025
|
0.156
|
16
|
0.157
|
4.0
|
22
|
|
7/32
|
0.219
|
40
|
0.025
|
0.187
|
16
|
0.189
|
4.8
|
12
|
|
1/4
|
0.250
|
40
|
0.025
|
0.218
|
16
|
0.221
|
5.7
|
2
|
|
9/32
|
0.281
|
40
|
0.025
|
0.249
|
16
|
0.257
|
6.4
|
F
|
|
5/16
|
0.313
|
40
|
0.025
|
0.281
|
16
|
0.290
|
7.2
|
L
|
|
3/8
|
0.375
|
40
|
0.025
|
0.343
|
16
|
0.348
|
8.9
|
S
|
|
7/16
|
0.438
|
40
|
0.025
|
0.406
|
16
|
0.413
|
10.4
|
Z
|
|
1/2
|
0.500
|
40
|
0.025
|
0.468
|
16
|
0.469
|
12.0
|
15/32
|