prop bolt torque

Here is the table from the Sensenich web site.

TABLE 1
WOOD PROPELLER INSTALLATION
RECOMMENDED WRENCH TORQUES
Size of Steel Recommended Wrench Torque Range*
Aircraft Bolts
Spec. dia. (in-lbs) (ft-lbs) N-m
(in)
AN4 1/4 120 - 140 10 to 12 14 to 16
AN5 5/16 130 - 160 11 to 13 15 to 18
AN6 3/8 175 - 225 15 to 19 20 to 25
AN7 7/16 225 - 275 19 to 23 25 to 31
AN8 1/2 275 - 325 23 to 27 31 to 37
CAUTION: Over-tightening propeller attaching bolts will
cause the wood of the hub to crush, breaking its
moisture seal and slightly reducing drive-torque
capacity of the installation.


Kevin
 
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