CLAMP

The MS21105-4 is a genuine Textron Aviation clamp — a fastening or retaining hardware item used in the airframe. It is fitted to the 1900 Airliner. Because the MS21105-4 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. Across the Beechcraft 1900 fleet, correctly identified factory parts like this keep every airframe consistent and configuration-correct. 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. The value of an OEM part is as much in its paperwork and pedigree as its metal — both of which an aircraft's records require. On a certificated airframe, part provenance matters as much as the part itself; genuine factory sourcing settles that question up front. 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 Beechcraft — the Wichita, Kansas manufacturer founded in 1932 and part of Textron Aviation since 2014 — this part carries a name long associated with rugged, capable aircraft. The Beechcraft 1900, a 19-passenger regional airliner derived from the King Air, was produced from 1982 to 2002 and still serves commuter and cargo operators worldwide. Request a quote for MS21105-4, or browse more Beechcraft 1900 parts on Flying411.