Tightening torques for union nuts to DIN 3859-2
1 Union nut
2 Union body
3 O-ring
4 Ferrule
Union nut: On installing the ball-type union, after tightening the union nut firmly by hand (noticeable
increase in force), it should be tightened another 1/4 turn (90°) past this point.
Tightening torques for spigot unions with O-ring to ISO 6149-2
Thread
Torque (Nm) +10%
M8 x 1
10
M10 x 1
20
M12 x 1.5
35
M14 x 1.5
45
M16 x 1.5
55
M18 x 1.5
70
M20 x 1.5
1)
80
M22 x 1.5
100
M27 x 2
170
MS150063/02E 2014-03
| General Information | 23
TIM-ID: 0000002333 - 015
