BSPT
Ø di filettatura in mm
mm sized thread Ø
Ø de rosca en mm
Numero di filetti per pollice
Number of threads per inch
Número de roscas por pulgadas
1/16
7,723
28
1/8
9,728
28
1/4
3/8
13,157
16,662
19
19
1/2
3/4
20,995
26,441
14
14
1
1”1/4
1”1/2
2
33,249
41,910
47,803
59,614
11
11
11
11
2”1/2
3
4
75,184
87,884
113,030
11
11
11
BSW
Ø di filettatura in mm
mm sized thread Ø
Ø de rosca en mm
Numero di filetti per pollice
Number of threads per inch
Número de roscas por pulgadas
1/4
6,350
20
5/16
7,937
18
3/8
9,525
16
7/16
11,112
14
1/2
12,700
12
5/8
15,875
11
3/4
19,050
10
7/8
22,225
9
1
25,400
8
1”1/8
1”1/4
28,575
31,750
7
7
1”1/2
38,100
6
1”3/4
44,450
5
2”
50,800
4,5
2”1/4
2”1/2
57,150
63,500
4
4
2”3/4
69,850
3,5
NPT
Ø esterno in mm
mm sized thread Ø
Ø externo en mm
Numero di filetti per pollice
Number of threads per inch
Número de roscas por pulgadas
1/8
10,287
27
1/4
3/8
13,716
17,145
18
18
1/2
3/4
21,336
26,670
14
14
1
1”1/4
1”1/2
2
33,401
42,164
48,260
60,325
11,5
11,5
11,5
11,5
2”1/2
3
3”1/2
4
73,025
88,900
101,600
114,300
8
8
8
8
6
5,974
1
8
7,972
1,25
10
9,968
1,5
12
11,966
1,75
14
16
13,962
15,962
2
2
18
20
22
17,958
19,958
21,958
2,5
2,5
2,5
24
27
23,952
26,952
3
3
30
33
29,947
32,947
3,5
3,5
36
39
35,940
38,940
4
4
42
45
41,937
44,937
4,5
4,5
48
52
47,929
51,929
5
5
56
60
55,925
59,925
5,5
5,5
64
68
72
63,920
67,920
71,920
6
6
6
BSPP
Ø di filettatura in mm
mm sized thread Ø
Ø de rosca en mm
Numero di filetti per pollice
Number of threads per inch
Número de roscas por pulgada
1/8
9,728
28
1/4
3/8
13,157
16,662
19
19
1/2
3/4
20,955
26,441
14
14
1
1”1/4
1”1/2
2
33,249
41,910
47,803
59,614
11
11
11
11
2”1/2
3
3”1/2
4
75,184
87,884
100,330
113,030
11
11
11
11
159
TABELLE FILETTATURE
THREADING TABLES
TABLAS DE LAS ROSCA
FILETTATURA ESTERNA passo gas conico
EXTERNAL THREADING gas tapered pitch
ROSCA EXTERNA paso gas cónico
1:16 UNI 339 - ISO/R7 - BSPT
FILETTATURA ESTERNA passo Whitworth
EXTERNAL THREADING Whitworth pitch
ROSCA EXTERNA paso Whitworth
BSW – BS 84
FILETTATRICI / THREADING MACHINES / ROSCADORAS
FILETTATURA ESTERNA passo americano conico
EXTERNAL THREADING tapered american pitch
ROSCA EXTERNA paso americano cónico
1:16 NPT - USAS - B 2.1
FILETTATURA ESTERNA metrico a passo grosso
EXTERNAL THREADING metric large pitch
ROSCA EXTERNA métrico paso grande
MA UNI4535 - ISO/R 261
FILETTATURA ESTERNA passo gas cilindrico
EXTERNAL THREADING cylindrical gas pitch
ROSCA EXTERNA paso gas cilíndrico
UNI 338 - ISO228/I - BSPP
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