We90 shall be stamped on required cmg brush part. This represents the hardness rating.
An item specifically designed to be used in the transfer of electrical energy to or from another conducting surface. Either the brush or the surface is continually moving during the transfer of energy. The brush is usually composed in part of some form of the element carbon. Includes: (1) a single brush either with or without an attached shunt (flexible wire lead) and/or a helical or flat type pressure spring; (2) a split brush composed of two or more pieces (wafers), which are used in place of one brush usually connected together by individual shunts to a common terminal; (3) paired brushes composed of two identical or non-identical brushes connected together by a common shunt either with or without pressure springs or connected by individual shunts to a common terminal, or with pressure springs and connected to a common bar, bracket or the like either with or without individual shunts; (4) multiple brushes composed of more than two identical or non-identical brushes without pressure springs connected by individual shunts to a common terminal, or with pressure springs and connected to a common bar, bracket or the like by individual shunts. Does not include moving contacts which make and slide past stationary contacts, but are stationary while the circuit is conducting, such as the sliding contacts on a rheostat or the stationary contact on a synchro. Excludes: contact, electrical; and contact assembly, electrical.
Classification: Carbon or graphite brushes of a kind used for electrical purposes
NSN 5935-01-207-0637
NSN 6135-01-180-4588
NSN 5910-00-908-8417
NSN 6105-00-275-0826
NSN 5895-01-465-0264
NSN 4140-01-447-3141
NSN 6145-01-634-0388
NSN 5960-01-553-4557
NSN 5925-01-415-3084
NSN 2925-00-127-7828
NSN 5950-01-482-3047
NSN 5950-00-715-1275