IAI America ISPDACR-ESD - Manual (Page 41)

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5. Installation
Tightening torque
Applicable bolt
Bolt seating surface is steel Bolt seating surface is aluminum
M6 12.3 N-m (1.26 kgf-m) 5.4 N-m (0.55 kgf-m)
M8 30.0 N-m (3.06 kgf-m) 11.5 N-m (1.17 kgf-m)
About tightening screws
Use high-tension bolts conforming to ISO 10.9 or higher.
If a tapped hole is used, use a screw not longer than the engagement length.
Note changed to 1.8 times more of the nominal diameter for the length of thread engagement.
4- 8H10, reamed, depth 10
4-M6, depth 24
4-M8 tapped, depth 24