Special prop bolts
Some would have you think that props require special bolts. Some sales
people advertise certain bolts as prop bolts. In general aviation, it is
the manufacturer who gets to decide which bolt of whatever style is used in
his certified aircraft. The owner of such an aircraft must use the same
bolt, with only a few exceptions. The mythical prop bolt does not exist.
The addition of safety wire to the head of a bolt is not a substitute for
the proper torque, and is only designed to keep the bolt in place should
torque be lost for some reason. The direction of the pull on the bolt by
the wire should always be in the direction that would tighten the bolt. A
prop secured with a bolt and self locking nut does not require the addition
of safety wire.
Orma
Southfield, MI
N110LR celebrating 20 years
Flying, flying and more flying
http://www.kr-2.aviation-mechanics.com/
