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Machinist Reference
TAP & DRILL CHART
⚙️
CHIP (CUT)
ROLL FORM
Show Common Sizes
Edit common sizes in ⚙️
75%
50%
Alum, Brass, Plastic
MAJ
MIN
CLOSE
FREE
SIZE
TPI
TAP
CLEAR
0
80
3/64
.047
52
.064
1
64
53
.060
48
.076
1
72
53
.060
48
.076
2
56
50
.070
43
.089
2
64
50
.070
43
.089
3
48
47
.079
37
.104
3
56
45
.082
37
.104
4
40
43
.089
32
.116
4
48
42
.094
32
.116
5
40
38
.102
30
.129
5
44
37
.104
30
.129
6
32
36
.107
27
.144
6
40
33
.113
27
.144
8
32
29
.136
18
.170
8
36
29
.136
18
.170
10
24
22
.157
9
.196
10
32
21
.159
9
.196
12
24
16
.177
2
.221
12
28
14
.182
2
.221
12
32
13
.185
2
.221
1/4
20
7
.201
F
.257
1/4
28
3
.213
F
.257
1/4
32
7/32
.219
F
.257
5/16
18
F
.257
P
.323
5/16
24
I
.272
P
.323
5/16
32
9/32
.281
P
.323
3/8
16
5/16
.313
W
.386
3/8
24
Q
.332
W
.386
3/8
32
11/32
.344
W
.386
7/16
14
U
.368
29/64
.453
7/16
20
25/64
.391
29/64
.453
7/16
28
Y
.404
29/64
.453
1/2
13
27/64
.422
33/64
.516
1/2
20
29/64
.453
33/64
.516
1/2
28
15/32
.469
33/64
.516
9/16
12
31/64
.484
37/64
.578
9/16
18
33/64
.516
37/64
.578
9/16
24
33/64
.516
37/64
.578
5/8
11
17/32
.531
41/64
.641
5/8
18
37/64
.578
41/64
.641
5/8
24
37/64
.578
41/64
.641
11/16
24
41/64
.641
45/64
.703
3/4
10
21/32
.656
49/64
.766
3/4
16
11/16
.688
49/64
.766
3/4
20
45/64
.703
49/64
.766
13/16
20
49/64
.766
53/64
.828
7/8
9
49/64
.766
57/64
.891
7/8
14
13/16
.813
57/64
.891
7/8
20
53/64
.828
57/64
.891
15/16
20
57/64
.891
61/64
.953
1
8
7/8
.875
1-1/64
1.016
1
12
15/16
.938
1-1/64
1.016
1
20
61/64
.953
1-1/64
1.016