NUT

The S4216-1 is a genuine Textron Aviation nut — a fastening or retaining hardware item used in the airframe. It fits the Skyhawk and Skylane. It carries an export classification of ECCN EAR99, weighs 0.01 lbs, and measures 0.37 (L) x 0.32 (W) x 0.16 (H) in. As an original-equipment (OEM) part supplied directly by Textron Aviation, the S4216-1 is built to the aircraft maker's specification and cross-references the type design as documented in the maintenance data. Choosing the genuine part over an unapproved substitute preserves configuration control and simplifies inspection sign-offs. Parts like this are shared across the Cessna Skyhawk and Skylane aircraft, reflecting how much structure and hardware these models have in common. Fastening and retaining hardware may look simple, but grade, size, and finish are specified for the joint each secures — the correct part matters. An unapproved or surplus substitute can introduce fit, material, or paperwork problems that surface at the next inspection; the genuine part avoids that risk. Fitting the correct factory part the first time avoids the rework, removal, and re-inspection that an incorrect or unapproved part can trigger. Built by Textron Aviation, whose Cessna line was founded in Wichita, Kansas in 1927 and joined Textron in 1992, this part carries one of general aviation's most storied names. The Cessna 172 Skyhawk is the most-produced aircraft in history, with more than 44,000 built since 1956, and remains in production under Textron Aviation. Request a quote for S4216-1, or browse more Cessna Skyhawk and Skylane parts on Flying411.