NUT, SELF-LOCKING, CASTELLATED

The MS21225-6 is a genuine Textron Aviation nut self locking castellated used to fasten, secure, or retain components during assembly of the airframe. It is fitted to the Citation Latitude, Citation Longitude, and Citation V, Ultra, Encore or Encore+. It carries an export classification of ECCN EAR99, weighs 0.02 lbs, and measures 0.64 (L) x 0.56 (W) x 0.41 (H) in. Supplied directly by Textron Aviation as an original-equipment (OEM) part, the MS21225-6 meets the manufacturer's specification and keeps the aircraft configuration-correct, with clean traceability in the maintenance records. Parts like this are shared across the Cessna Citation aircraft, reflecting how much structure and hardware these models have in common. Aircraft hardware is called out to a specific specification for each location; an off-the-shelf equivalent is rarely acceptable. Because substitutions on type-certificated aircraft require approved data, the genuine part is the straightforward, compliant choice for this application. The factory part is built to the manufacturer's material and dimensional specification, so it installs as designed without the surprises a generic equivalent can bring. Fitting the correct factory part the first time avoids the rework, removal, and re-inspection that an incorrect or unapproved part can trigger. Cessna traces to the company Clyde Cessna founded in Wichita, Kansas in 1927; Textron Inc. acquired it in 1992, and since 2014 it has anchored Textron Aviation alongside Beechcraft and Hawker. The Citation family is the best-selling line of business jets ever built, and more than 7,500 have been delivered worldwide. To check availability, request a quote for MS21225-6 or browse more Cessna Citation parts on Flying411.