1 - Komet Scandinavia AB

JEL® Tap drill diameters for milled and cut threads
UNC – American Unified
coarse thread
UNF – American Unified
fine thread
UNEF – American Unified
extra fine thread
1
Milled and cut threads
Milled and cut threads
Milled and cut threads
Size
Nominal
x
Pitch
t.p.i.
Tap drill
x
Nr. 4 2,845 40 2,35
Nr. 5 3,175 40 2,65
Nr. 6 3,505 32 2,85
Nr. 8 4,166 32 3,50
Nr. 10 4,820 24 3,90
Nr. 12 5,486 24 4,50
1/4 6,350 20 5,10
5/16 7,938 18 6,60
3/8 9,525 16 8,00
7/16 11,112 14 9,40
1/2 12,700 13 10,80
9/16 14,288 12 12,20
5/8 15,875 11 13,50
3/4 19,050 10 16,50
7/8 22,225 9 19,50
1" 25,400 8 22,50
1 1/8" 28,575 7 25,00
1 1/4" 31,750 7 38,00
1 3/8" 34,925 6 30,75
1 1/2" 38,100 6 34,00
1 3/4" 44,450 5 39,50
2" 50,800 4 1/2 45,00
Size
Nominal
x
Pitch
t.p.i.
Tap drill
x
Nr. 4 2,845 48 2,30
Nr. 5 3,175 44 2,60
Nr. 6 3,505 40 2,85
Nr.8 4,166 36 3,45
Nr. 10 4,826 32 4,05
Nr. 12 5,486 28 4,60
1/4 6,350 28 5,45
5/16 7,938 24 6,90
3/8 9,525 24 8,45
7/16 11,112 20 9,85
1/2 12,700 20 11,45
9/16 14,288 18 12,90
5/8 15,875 18 14,45
3/4 19,050 16 17,45
7/8 22,225 14 20,40
1" 25,400 12 23,30
1 1/8" 28,575 12 26,45
1 1/4" 31,750 12 29,65
1 3/8" 34,925 12 32,80
1 1/2" 38,100 12 36,00
Size
Nominal
x
Pitch
t.p.i.
Tap drill
x
Nr. 12 5,486 32 4,75
1/4 6,350 32 5,55
5/16 7,938 32 7,15
3/8 9,525 32 8,70
7/16 11,112 28 10,20
1/2 12,700 28 11,80
9/16 14,288 24 13,20
5/8 15,875 24 14,80
11/16 17,462 24 16,40
3/4 19,050 20 17,80
13/16 20,637 20 19,40
7/8 22,225 20 20,95
15/16 23,812 20 22,50
1" 25,400 20 24,15
1 1/16" 26,987 18 25,60
1 1/8" 28,575 18 27,20
1 3/16" 30,162 18 28,75
1 1/4" 31,750 18 30,35
1 5/16" 33,337 18 31,95
1 3/8" 34,925 18 33,50
1 7/16" 36,512 18 35,10
1 1/2" 38,100 18 36,70
2
3
4
5
G
Pipe thread DIN EN ISO 228
Milled and cut threads
EG
Helical wire insert thread
Milled and cut threads
Size
NPT, NPTF –
without using a reamer
Milled and cut threads
6
Size
Nominal
x
Pitch
t.p.i.
Tap drill
x
G 1/8“ 9,728 28 8,90
G 1/4“ 13,157 19 11,70
G 3/8“ 16,662 19 15,40
G 1/2“ 20,955 14 19,10
G 5/8“ 22,911 14 21,10
G 3/4“ 26,441 14 24,60
G 7/8“ 30,201 14 28,40
G 1“ 33,249 11 30,80
G 1 1/8“ 37,897 11 35,50
G 1 1/4“ 41,910 11 39,50
G 1 3/8“ 44,323 11 41,90
G 1 1/2“ 47,803 11 45,40
G 1 3/4“ 53,746 11 51,40
G 2“ 59,614 11 57,20
G 2 1/4" 65,710 11 63,20
G 2 1/2" 75,184 11 72,80
G 2 3/4" 81,834 11 79,10
G 3" 87,884 11 85,50
Size
Nominal
x
Pitch
Tap drill
x
EG M3 3 0,50 3,15
EG M3,5 3,5 0,60 3,70
EG M4 4 0,70 4,20
EG M4,5 4,5 0,75 4,75
EG M5 5 0,80 5,25
EG M6 6 1,00 6,30
EG M7 7 1,00 7,30
EG M8 8 1,25 8,40
EG M10 10 1,50 10,50
EG M12 12 1,75 12,50
EG M14 14 2,00 14,50
EG M16 16 2,00 16,50
EG M18 18 2,50 18,75
EG M20 20 2,50 20,75
EG M22 22 2,50 22,75
EG M24 24 3,00 24,75
EG M27 27 3,00 27,75
EG M30 30 3,50 31,00
x D1
Pitch
t.p.i.
Tap drill
x D1
NPT
Tap drill
x D1
NPTF
1/16 27 6,15 6,10
1/8 27 8,50 8,45
1/4 18 11,00 10,90
3/8 18 14,50 14,30
1/2 14 17,85 17,60
3/4 14 23,20 23,00
1“ 11 1/2 29,00 28,75
1 1/4“ 11 1/2 37,80 37,50
1 1/2“ 11 1/2 44,00 43,75
2“ 11 1/2 56,00 55,75
7
8
9
149