Description
The NAS446-4-3 is a genuine Textron Aviation nut — a fastening or retaining hardware item used in the airframe. It is applicable to the King Air 100, King Air B200, B200T, B200C or B200CT, King Air C90, C90A, C90GT or E90, Skyhawk, and Skylane. It carries an export classification of ECCN EAR99.
Because the NAS446-4-3 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 Beechcraft King Air, Cessna Skyhawk, and Cessna 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. 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.
Both the Cessna and Beechcraft lines are supported today by Textron Aviation, formed in 2014 to unite the two historic Wichita manufacturers with Hawker. The King Air first flew in 1964 and became the best-selling business turboprop in history — still built today as the King Air 260 and 360.
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