BRUSH ELECTRICAL
PN 1906979
NSN 5977-00-981-7049
MFG GENERAL MOTORS 
 
NEW GOV SURPLUS
SUPPLIER CAGE CODE 03EF7
 
ITEM NAME:   BRUSH,ELECTRICAL CO
DEFINITION:  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.
            
 
CHARACTERISTIC                          VALUE
SHUNT POSITION DESIGNATOR               2 AND 8                                          
BODY STYLE                              RECTANGULAR COMMUTATOR                           
RADIUS                                  1.090 INCHES NOMINAL                             
WIDTH                                   1.247 INCHES MINIMUM AND 1.255 INCHES MAXIMUM    
THICKNESS                               0.310 INCHES MINIMUM AND 0.313 INCHES MAXIMUM    
LENGTH                                  1.030 INCHES MINIMUM AND 1.090 INCHES MAXIMUM    
BRUSH SHUNT LENGTH                      1.160 INCHES MINIMUM AND 1.460 INCHES MAXIMUM ALL
                                        SHUNTS                                           
TERMINAL HOLE DIAMETER                  0.203 INCHES NOMINAL                              
TOP STYLE                               BEVELED FRONT WITH LEFT AND RIGHT EDGE BEVELED   
CONTACT FACE STYLE                      CONCAVE ON BEVEL                                 
BEVEL ANGLE                             25.0 DEGREES NOMINAL                              
SHUNT INSULATION PROVISION              2 UNINSULATED                                    
AND QUANTITY                                                                             
ANGLE                                   25.0 DEGREES NOMINAL                             
MATERIAL                                CARBON                                           
STYLE DESIGNATOR                        ONE PIECE                                        
TERMINAL TYPE AND QUANTITY              1 FLAG W/HOLE