2b thread class left-hand 2.7812" overall length 0.4995" bore diameter 20 thread quantity per inch requires magnetic inspection chromium inner member surface treated ball type unf thread series
0.1960" overall width 0.2500" bore diameter 3three holes 0.1090 in. dia equally spaced on 0.8120 in. dia pitch circle, starting torque not to exceed 0.4 gm cm under a 400 gm thrust load, lubricate bearing w/oil film of specified lubricant, bearing to be in accordance w/ sperry spec P2597257 non-loading groove, non-separable
