SOLID CARBIDE THREADING TOOLS

M ISO Metric coarse thread DIN 13
maschiatura M. Ø interno max mm punta Ø mm.
1,6 x 0,35 1,321 1,25
1,8 x 0,35 1,521 1,45
2 x 0,4 1,679 1,6
2 x 0,45 1,838 1,75
2,5 x 0,45 2,138 2,05
3 x 0,5 2,599 2,5
3,5 x 0,6 3,010 2,9
4 x 0,7 3,422 3,3
4,5 x 0,75 3,878 3,7
5 x 0,8  4,334 4,2
 6 x 1 5,153  5
 7 x 1  6,153 6
 8 x 1,25  6,912 6,8
 9 x 1,25 7,912  7,8
10 x 1,5 8,676 8,5
 11 x 1,5  9,976  9,5
 12 x 1,75  10,441 10,2
 14 x 2  12,210  12
 16 x 2  14,210 14
 18 x 2,5 15,744 15,5
 20 x 2,5  17,744 17,5
 22 x 2,5  19,744  19,5
24 x 3  21,252 21
 27 x 3 24,252 24
 30 x 3,5 26,771 26,5
 33 x 3,5 29,771 29,5
 36 x 4 32,270 32
 39 x 4 35,270 35
 42 x 4,5  37,799 37,5
45 x 4,5 40,799 40,5
48 x 5 43,297 43
52 x 5 47,297 47
MF ISO Metric fine thread DIN 13
maschiatura M.
 Ø interno max mm punta Ø mm.
3 x 0,35 2,721 2,65
4 x 0,5 3,599 3,5
5 x 0,5 4,599 4,5
6 x 0,75 5,378 5,2
7 x 0,75 6,378 6,2
8 x 0,75 7,378 7,2
8 x 1 7,153 7
9 x 1 8,153 8
10 x 0,75 9,378 9,2
10 x 1 9,153 9
 10 x 1,25 8,912  8,8
 11 x 1 10,153  10
 12 x 1 11,153  11
  12 x 1,25 10,912 10,8
 12 x 1,5  10,676  10,5
14 x 1  13,153  13
14 x 1,25 12,912  12,8
  14 x 1,5  12,676  12,5
15 x 1  14,153  14
  15 x 1,5 13,676  13,5
  16 x 1 15,153  15
16 x 15 14,676  14,5
  18 x 1 17,153 17
  18 x 15  16,676 16,5
  18 x 2  16,210 16
  20 x 1  19,153 19
  20 x 1,5  18,676  18,5
20 x 1 18,210  18
 22 x 1  21,153  21
22 x 1,5 20,676  20,5
22 x 2 20,210 20
  24 x 1  23,153 23
  24 x 15  22,676  22,5
24 x 2  22,210  22
  25 x 1  24,153 24
 25 x 1,5  23,676  23,5
  26 x 1,5 24,676 21,5
  27 x 1,5  25,676 25,5
  27 x 2 25,210 25
  28 x 1,5  26,676  26,5
  30 x 1,5  28,676 28,5
  30 x 2  28,210 28,210
  32 x 1,5  30,676 30,5
  33 x 2  31,210 31
  33 x 1,5  33,676 33,5
36 x 1,5 34,676 34,5
36 x 2 34,210 34
36 x 3 33,252 33
38 x 1,5 36,676 36,5
39 x 3 36,252 36
40 x 1,5 38,676 38,5
42 x 1,5 40,676 40,5
45 x 1,5 43,676 43,5
50 x 1,5 48,676 48,5
UNC American Standard Unified coarse thread
Maschiatura UNC Ø interno max mm. punta Ø mm.
4-40 2,385 2,35
5-40 2,697 2,65
6-32 2,896 2,85
8-32 3,531 3,5
10-24 3,962 3,9
10-24 4,597 4,5
1/4-20 5,268 5,1
5/16-18 6,734 6,6
3/8-16 8,164 8
7/16-14  9,550 9,4
 1/2-13  11,013 10,8
 9/16-12  12,456  12,2
 5/8-11  13,868  13,5
3/4-10 16,833 16,5
 7/8-9  19,748  19,5
 1″-8 22,598  22,25
 11/8-7 25,349 25
 11/4-7  28,824 28
 13/8-6 31,120  30,5
 11/2-6 34,295  34
 13/4-5 39,814 39,5
 2-41/2  45,598  45
UNF American Standard Unified fine thread
Maschiatura UNF Ø interno max mm. punta Ø mm
4-48 2,459 2,459
5-44 2,741 2,7
6-40 3,023 2,95
8-36 3,607 3,5
10-32 4,166 4,1
12-28 4,724 4,7
1/4-28 5,580 5,5
5/16-24 7,038 6,9
3/8-24 8,626 8,5
7/16-20  10,030 9,9
 1/2-20 11,618  11,5
9/16-18  13,084 12,9
 5/8-18  14,671 14,5
 3/4-16  17,689 17,5
7/8-14  20,663 20,5
 1-12 23,569  23,25
 11/8-12 26,744  26,5
 11/4-12  29,919 29,5
 11/2-12  36,269 36
G (BSP) Cylindrical Whitworth pipe thread
Maschiatura W Ø interno max mm. punta Ø mm.
3/32 X 48 1,910 1,85
1/8 X 40 2,590 2,55
5/32 X 32 3,211 3,2
3/16 X 24 3,744 3,7
7/32 X 24 4,538 4,5
1/4 X 20 5,224 5,1
5/16 X 18 6,661 6,5
3/8 X 16 8,052 7,9
7/16 X 14 9,379 9,2
1/2 X 12  10,610 10,5
 9/16 X 12  12,176  12
 5/8 X 11  13,598 13,5
 3/4 X 10  16,538  16,5
 7/8 X 9  19,411  19,25
 1 X 8  22,185 22
 11/8 X 7  24,879 24,75
11/4 X 7  28,054 28
 13/8 X 6 30,555  30,5
11/2 X 6 33,730 33,5
 15/8 X 5  35,921  35,5
 13/4 X 5  39,096  39
 17/8 X 41/2  41,648  41,5
 2X41/2  44,823  44,5
W Whitworth pipe thread
Maschiatura GAS Ø interno max mm punta Ø mm
1/8 X 28 8,848 8,8
1/4 X 19 11,890 11,8
3/8 X 19 15,395 15,25
1/2 X 14 19,172 19
5/8 X 14 21,128 21
3/4 X 14 24,658 24,5
7/8 X 14 28,418 28
1 X 11 30,931 30,5
11/4 X 11 39,592 39,5
11/2 X 11  45,485 45
 13/4 X 11  51,428  51
2 X 11  57,296  57
 21/4 X 11  63,392 63,30
 23/8 X 11 67,080 67
 21/2 X 11  72,866 72,8
 23/4 X 11  79,216 79,1
3 X 11 85,566  85,5
 31/4 X 11 91,662 91,5
 31/2 X 11 98,012 98
 33/4 X 11  104,362 104
 4 X 11 110,712 110,5
PG Steel conduit thread
Pg. filetto Ø interno max mm. Ø foratura
7 20 11,43 11,4
9 18 14,01  14
11 18 17,41 17,25
13,5 18 19,21  19
16 18 21,31  21,25
21 16 27,03 26,9
29 16 35,73 35,6
36 16 45,73 45,6
42 16 52,73  52,6
48  16 58,03  57,9
FRc (BSPT) Tapered Whitworth pipe thread 1:16
maschiatura GAS RC punta Ø mm
1/8 X 28 8,30
1/4 X 19 11,10
3/8 X 19 14,50
1/2 X 14 18,20
3/4 X 14 23,50
1 X 11 29,75
11/4 X 11 38,20
11/2 X 11 44
2 X 11 55,70
NPT American tapered pipe thread, taper 1:16
maschiatura NPT punta Ø mm
1/8 X 27 8,5
 1/4 X 18  11
 1/2 X 14  18
 3/4 X 14  23
 1 X 111/2  29
 11/4 X 111/2  38
 11/2 X 111/2 44
 2 X 111/2 56

DESCRIPTION OF THE MAIN THREAD

CYLINDRICAL

STRAIGHT PIPE THREADS

TAPER PIPE THREADS

TRAPEZOIDAL THREADING FORM

BRITISH THREADING UNIFICATIONS

OTHERS

M ISO Metric coarse thread DIN 13
MF ISO Metric fine thread DIN 13
UNC Unified coarse thread
UNF Unified fine thread
UNEF Unified extra fine thread
UNJ Unified thread ASME B1.15
UNJC Unified coarse thread ASME B1.15
UNJEF Unified extra fine thread ASME B1.15
UNJF Unified fine thread ASME B1.15
NGO National Gas Outlet Thread
NPS National Straight Pipe thread
NPSC Natioal Straight Coupling Pipe Thread
NPSF National Straight Pipe for Fuels Thread
NPSH National Pipe Straight Hose
NPSI Dryseal American Intermediate Internal Straight Pipe Threads
NPSL National Pipe Straight Locknut
NPSM American Standard Straight Mechanical Pipe Thread
NPTF American tapered pipe thread, taper 1:16
NPTR American tapered pipe thread for railing fitting, taper 1:16
NPTC American tapered pipe thread for chlorine gas discharge valve connections, taper 1:16
NPTG American tapered pipe thread for connection of discharge valves to compressed gas cylinder, taper 1:16
PTF-SAE SHORT SAE short taper thread waterproof dry tube
PTF-SPL SHORT short taper thread waterproof dry tube
PTF-SPL EXTRASHORT extra-short tapered thread waterproof dry tube
ANPT American tapered pipe thread for navy, army, aviation, taper 1:16
NGT American national gas tapered thread
SGT American national special gas tapered thread
API American national special tapered thread for American Petroleum Institute
ACME-C Trapezoidal American threading form centralizing
ACME-G Trapezoidal American threading general purpose
STUB-ACME Trapezoidal American threading flat with reduced thread depth
60° STUB-ACME Trapezoidal American threading flat with reduced thread depth 60°
N Butt American Buttress Screw Thread
BSW British Standard Whitworth coarse thread
BSF British Standard Whitworth fine thread
BSC British Standard Cycle
BSPT British Standard Pipe Taper thread
WHIT Whitworth standard pipe thread DIN EN ISO 228
BA Standard British Association thread
R External thread taper pipe British Standard watertight (dry seal)
Rc Internal thread taper pipe British Standard watertight (dry seal)
Rp Cylindrical inner thread British Standard Pipe
CEI British thread for cycles
NH Thread for pipe joints and flexible couplings fire hose

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