McFarlane’s lock rings are manufactured with 304 stainless steel – an improvement over the original rings that are made with mild carbon steel. This provides better corrosion resistance with the same strength.
Product details:
- Fits many Cessna 150, 152, 172, 175, 177, 182, 205, 206, 207, 210, 303, 310, 320, 336, 337 model aircraft
- Replaces: 0841200-25
- FAA-PMA approved
- Manufactured by McFarlane Aviation, Inc.

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