3040-37-526-4071

6645-12-374-9894 6645123749894 123749894 is a timepiece designed exclusively to indicate a time interval, with reference to measurement. it may be started and stopped at any given instant, and controlled by a start and stop mechanism. excludes timer as used to control, regulate, or register a fixed time interval which has been previously determined.

2805-00-374-9894 2805003749894 003749894

3120-14-374-9894 3120143749894 143749894 is a tubular shaped item with or without flange(s) designed to reduce friction and carry a kinetic load on the surface(s) parallel to the axis of the bore. it must have a visible or detectable means of lubrication or be self-lubricated. the over all length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body, except for straight tubular (without flange or shoulder) items having a bearing surface(s) parallel to the axis of the bore only. includes items which are divided into two or more segments which include 180 degrees (3.141 radians) or less of the bearing periphery. see also bushing, sleeve; spacer, sleeve; and washer (as modified). excludes pin, hollow.

1660-01-374-9894 1660013749894 013749894 is a hollow body used to transport air to various parts of the aircraft for the purpose of heating, cooling, pressurizing, de-icing, and the like. it may include flange(s), bracket(s), and the like for mounting purposes. excludes pipes used in aircraft exhaust systems and pipes used in non-aircraft applications. excludes pipe, exhaust and pipe, air conditioning-heating.