FED FF-B-187/10

FED FF-B-187/10 BEARING, ROLLER, TAPERED, DOUBLE ROW, STRAIGHT BORE, TWO SINGLE CONES WITH CONTACTING FRONT FACES SLOTTED AND CHAMFERED FOR LUBRICATION, ONE DOUBLE CUP WITH LUBRICATION HOLES AND GROVE (TYPE TNASW) (S/S BY A-A-59658)

standard by Federal Specifications and Standards, 09/10/1993