Description
The MS51957-45 is a genuine Textron Aviation screw — a fastening or retaining hardware item used in the airframe. It is fitted to the Beechjet 400/400A, Citation Excel, XLS, XLS+, XLS Gen 2, King Air C90, C90A, C90GT or E90, and Skyhawk. It carries an export classification of ECCN EAR99.
As an original-equipment (OEM) part supplied directly by Textron Aviation, the MS51957-45 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 Beechcraft, Cessna Citation, Beechcraft King Air, and 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. Genuine sourcing means the part matches the drawing exactly, so fit and function are known quantities rather than a gamble at installation.
An unapproved or surplus substitute can introduce fit, material, or paperwork problems that surface at the next inspection; the genuine part avoids that risk.
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 Beechjet 400, which began life as the Mitsubishi Diamond and later became the Hawker 400, is a light business jet supported today through Textron Aviation.
To check availability, request a quote for MS51957-45 or browse more Beechcraft, Cessna Citation, Beechcraft King Air, and Cessna Skyhawk parts on Flying411.
