Evenly distributes the load of the threaded fastener and protects the surface from damage during installation.
This replacement washer is used with piper carb heat control MC63902-021 between the knob and jam nut.
OEM Part Number | McFarlane Part Number | Comment |
494-080 | MC494-080 |
EASA STC SA01074WI, Service Kit, Flap Roller, MCSK100 |
STC SA01074WI, Canadian, Service Kit, Flap Roller, MCSK100 |
McFarlane Aviation, Inc. PMA Supplement 55 |