DRESSTA 560C - Torque Values for Split Flange Connections

SECTION 6 SPECIFICATIONS
Page 22
OM560C99/1E DRESSTA
TORQUE VALUES FOR STANDARD ENGLISH FASTENERS
Chart 2
Nominal Thread Diameter
[inch]
Standard Torque ±±10%
[Nm]
1/4 10
5/16 21
3/8 38
7/16 60
1/2 92
9/16 130
5/8 180
3/4 325
7/8 520
1 780
1- 1/8 1110
1- 1/4 1565
1- 3/8 2050
1- 1/2 2720
1- 3/4 3380
2 5080
6.12. TORQUE VALUES FOR SPLIT FLANGE CONNECTIONS
The following chart 3 provides the tightening torques for split flange connections used in hydraulic
systems. Split flanges and fitting shoulders should fit squarely. Install all bolts, finger tighten and
then torque evenly. Overtorquing bolts will damage the flanges and/or bolts, which may cause
leakage.
Chart 3
Bolt size in inches Flange size in inches* Torque Value Nm
1/2 5/16
20÷24
3/4 3/8
30÷37
1 3/8
37÷47
1-1/4 7/16
47÷61
1- 1/2 1/ 2
62÷79
2 1/ 2
75÷88
2- 1/2 1/ 2
107÷123
3 5/8
187÷203
3- 1/2 5/8
159÷180
*
)
Outside diameter of hydraulic tube or hose fitting.