Description
The S4213-12 is a genuine Textron Aviation clip nut used to fasten, secure, or retain components during assembly of the airframe. It is fitted to the Skyhawk. It carries an export classification of ECCN EAR99, weighs 0.01 pounds, and measures 0.5 (L) x 0.45 (W) x 0.1 (H) Inches.
Because the S4213-12 is an original-equipment (OEM) part sourced directly from Textron Aviation, it matches the exact specification and placement called out in the aircraft's type design and maintenance data — assurance a generic substitute cannot offer.
Parts like this are shared across the Cessna Skyhawk 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. Traceable OEM hardware keeps an aircraft's maintenance records defensible at annual, pre-purchase, and pre-buy inspections.
On a certificated airframe, part provenance matters as much as the part itself; genuine factory sourcing settles that question up front. Because substitutions on type-certificated aircraft require approved data, the genuine part is the straightforward, compliant choice for this application.
Using the factory part number preserves configuration control, so the airframe stays consistent with its approved type design and the work is straightforward to sign off at inspection.
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. With over 44,000 built, the Cessna Skyhawk is the best-selling aircraft ever made and is still produced today.
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