OPTIMUM
M A S C H I N E N - G E R M A N Y
Operation
Version 1.0.1 dated 2015-05-27
Page 54
Original operating instructions
TU3008 | TU3008V
GB
4.18.1 Metric threads (60° flank angle)
NPT
NPT
1“ – 11 ½“ NPT
F
itti
ngs and
tube jo
int
s
pitch P
depth of thread of the bolt h2=0.6134 x P
depth of thread of the nut H1 = 0.5413 x P
rounding r = 0.1443 x P
flank diameter d2 = D2 =d - 0.6493
core removing hole drill = d - P
flank angle = 60°
Metric coarse-pitch thread
Sizes in mm: preferably use the threads in column 1
Denomination of thread
d = D
pitch P
Fla
n
k
d
iameter
d2
=
D
2
Core diameter
Depth of thread
Roun
ding
r
Co
re
remo
vi
ng hol
e drill
Column 1
Column 2
Bolt
d3
Nut
D1
Bolt
h3
Nut
H1
M 1
0.25
0.838
0.693
0.729
0.153
0.135
0.036
0.75
M 1.1
0.25
0.938
0.793
0.829
0.153
0.135
0.036
0.85
M 1.2
0.25
1.038
0.893
0.929
0.153
0.135
0.036
0.95
M 1.4
0.3
1.205
1.032
1.075
0.184
0.162
0.043
1.1
M 1.6
0.35
1.373
1.171
1.221
0.215
0.189
0.051
1.3
M 1.8
0.35
1.573
1.371
1.421
0.215
0.189
0.051
1.5
M 2
0.4
1.740
1.509
1.567
0.245
0.217
0.058
1.6
M 2.2
0.45
1.908
1.648
1.713
0.276
0.244
0.065
1.8
M 2.5
0.45
2.208
1.948
2.013
0.276
0.244
0.065
2.1
M 3
0.5
2.675
2.387
2.459
0.307
0.271
0.072
2.5
M 3.5
0.6
3.110
2.764
2.850
0.368
0.325
0.087
2.9
M 4
0.7
3.545
3.141
3.242
0.429
0.379
0.101
3.3
M 5
0.8
4.480
4.019
4.134
0.491
0.433
0.115
4.2
M 6
1
5.350
4.773
4.917
0.613
0.541
0.144
5.0
M 8
1.25
7.188
6.466
6.647
0.767
0.677
0.180
6.8
M 10
1.5
9.026
8.160
8.376
0.920
0.812
0.217
8.5
M 12
1.75
10.863
9.853
10.106
1.074
0.947
0.253
10.2
Nut
Bolt
Cone
Nut
Bolt
