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www.boccassini.comDIAMETRI DI TORNITURA PER VITI
DIAMETERS TURNING FOR SCREWS
UNC
d p min-max
1 -64
1.74 - 1.83
2 -56
2.06 - 2.16
3 -48
2.33 - 2.49
4 - 40
2.69 - 2.82
5 -40
3.02 - 3.15
6 -32
3.33 - 3.48
8 -32
3.9 - 4.14
10 -24
4.61 - 4.80
12 -24
5.27 - 5.46
1/4 -20
6.11 - 6.32
5/16 -18
7.68 - 7.90
3/8 -16
9.25 - 9.49
7/16 -14
10.81 - 11.07
1/2 -13
12.38 - 12.66
9/16 -12
13.95 - 14.24
5/8 -11
15.52 - 15.83
3/4 -10
18.67 - 19.0
7/8 - 9
21.82 - 22.17
1' - 8
24.96 - 25.34
1'1/8 - 7
28.10 - 28.51
1'1/4 - 7
31.27 - 31.69
1'3/8 - 6
34.40 - 34.86
1'1/2 - 6
37.57 - 38.03
1'3/4 - 5
43.86 - 44.38
2'- 4 1/2
50.11 - 50.72
UNC
d p
min
max
1/16 - 27
7 . 5 2
7 . 6 4
1/8 - 27
9 . 8 7
9 . 9 9
1/4 - 18
13.10
13.26
3/8 - 18
16.52
16.66
1/2 - 14
20.55
20.71
3/4 - 14
25.87
26.03
1' -11 1/2
32.42
32.59
1'1/4 -11 1/2
41.14
41.32
1'1/2 - 11 1/2
47.21
47.39
2’ - 8
59.25
59.4
NPTF
d p
min
max
1/16 - 27
7 . 5 2
7 . 6 2
1/8 - 27
9 . 8 7
9 . 9 6
1/4 - 18
13.13
13.21
3/8 - 18
16.55
16.63
1/2 - 14
20.62
20.70
3/4 - 14
25.93
26.02
1' -11 1/2
32.47
32.56
1'1/4 -11 1/2
41.20
41.29
1'1/2 - 11 1/2
47.27
47.36
2’ - 8
59.28
59.37
NPTF
d p
mis.
toll.
1/16 - 28
7.47
± 0.05
1/8 - 28
9.48
± 0.05
1/4 - 19
12.78
± 0.08
3/8 - 19
16.26
± 0.08
1/2 - 14
20.44
± 0.11
3/4 - 14
25.85
± 0.11
1' - 11
32.60
± 0.14
UNF
d p min-max
0 - 80
1.37 - 1.50
1 - 72
1.75 - 1.83
2 - 64
2.07 - 2.16
3 - 56
2.39 - 2.49
4 - 48
2.71 - 2.82
5 - 44
3.03 - 3.15
6 - 40
3.35 - 3.48
8 - 36
4.00 - 4.14
10 - 32
4.65 - 4.80
12 - 28
5.29 - 5.46
1/4 - 28
6.16 - 6.32
5/16 - 24
7.72 - 7.91
3/8 - 24
9.31 - 9.49
7/16 - 20
10.87 -11.07
1/2 - 20
12.46 -12.66
9/16 - 18
14.03 -14.25
5/8 - 18
15.61-15.83
3/4 - 16
18.77-19.01
7/8 - 14
21.92-22.18
1' - 12
25.06-25.35
1'1/8 -12
28.24-28.52
1'1/4 -12
31.41-31.70
1'3 /8-12
34.58-34.87
1'1/2-12
37.76-38.05
BSW
d p min-max
3/32 - 48
2.28 - 2.38
1/8 - 40
3.06 - 3.17
5/32 - 32
3.84 - 3.96
3/16 - 24
4.62 - 4.76
7/32 - 24
5.41 - 5.55
1/4 - 20
6.19 - 6.35
5/16 - 18
7.77 - 7.93
3/8 - 16
9.34 - 9.52
7/16 - 14
10.92 -11.13
1/2 - 12
12.49 -12.7
9/16 - 12
14.07 -14.28
5/8 - 11
15.65 -15.87
3/4 - 10
18.81 -19.05
7/8 - 9
21.97 -22.22
1' - 8
25.13 -25.4
1'1/8 - 7
28.29 -28.57
1'1/4 - 7
31.46 -31.75
1'3/8 - 6
34.62 -34.92
1'1/2 - 6
37.79 -38.1
1'5/8 - 5
40.94 -4127
1'3/4 - 5
44.11 -44.45
1'7/8 -41/2
47.26 -47.62
2' - 41/2
50.43 -50.8
G
d p min-max
1/8 - 28
9.51 - 9.72
1/4 - 19
12.90 - 13.15
3/8 - 19
16.41 - 16.66
1/2 - 14
20.67 - 20.95
5/8 - 14
22.62 - 22.91
3/4 - 14
26.15 - 26.44
7/8 - 14
29.91 - 30.20
1' - 11
32.88 - 33.24
1'1/8 -11
37.53 - 37.89
1'1/4 -11
41.55 - 41.91
1'1/2 -11
47.44 - 47.80
1'3/4 -11
53.38 - 53.74
2' - 11
59.25 - 59.61
2'1/4 -11
65.27 - 65.71
2'1/2 -11
74.75 - 75.18
2'3/4 -11
81.1 - 81.53
3' -11
87.45 - 87.88
UNEF
d p min-max
12 - 32
5.30 - 5.46
1/4 - 32
6.17 - 6.32
5/16 - 32
7.76 - 7.91
3/8 - 32
9.34 - 9.5
7/16 - 28
10.91-11.08
1/2 - 28
12.50-12.67
9/16 - 24
14.07-14.25
5/8 - 24
15.66-15.84
3/4 - 20
18.81-19.01
7/8 - 20
21.91-22.18
1' - 20
25.15-25.36
1'1/8 - 18
28.31-28.53
1'1/4 - 18
31.48-31.70
1'3/8 - 1
34.61-34.88
UNEF
d p min-max
7 - 20
12.3 - 12.5
9 - 18
15 - 15.2
11 - 18
18.4 - 18.6
13.5 -18
20.2 - 20.4
16 - 18
22.3 - 22.5
21 - 16
28. - 28.3
29 - 16
36.7 - 37
36 - 16
46.7 - 47
42 - 16
53.7 - 54
48 - 16
59
59.3
d
a
d a
1:16
INFO