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8.1.2
Metric Bolt Specifications Bolting into Cast Aluminum
Table 8.5 Metric Bolt Bolting into Cast Aluminum
Bolt Torque
8.8
(Cast Aluminum)
10.9
(Cast Aluminum)
Nominal
Size (A)
ft·lbf
N·m
ft·lbf
N·m
M3
–
–
1
–
M4
–
–
2.6
4
M5
–
–
5.5
8
M6
6
9
9
12
M8
14
20
20
28
M10
28
40
40
55
M12
52
70
73
100
M14
–
–
–
–
M16
–
–
–
–
Figure 8.5: Bolt Grades
8.1.3
Flare-Type Hydraulic Fittings
1.
Check flare (A) and flare seat (B) for defects that might
cause leakage.
2.
Align tube (C) with fitting (D) and thread nut (E) onto
fitting without lubrication until contact has been made
between the flared surfaces.
3.
Torque the fitting nut (E) to the specified number of flats
from finger tight (FFFT) or to a given torque value in
Table
8.6 Flare-Type Hydraulic Tube Fittings, page 89
.
4.
Use two wrenches to prevent fitting (D) from rotating.
Place one wrench on the fitting body (D) and tighten
nut (E) with the other wrench to the torque shown.
5.
Assess the final condition of the connection.
Figure 8.6: Hydraulic Fitting
214017
88
Revision A