Notes On Threaded Connections With Aluminum Screws/Bolts - AH00.00-P-0006-01RM
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Model all (4xWD, CAR, Light transporter)
Aluminum screws/bolts are allowed to be used once only and must then be replaced by new ones.
The mating thread must be cleaned before a new aluminum screw/bolt is screwed in.
Otherwise the threaded connection may work loose.