3a thread class right-hand 2.9235" overall length 0.4995" bore diameter 20 thread quantity per inch keyway on shank 0.093 in. min 0.098 in. max width chromium inner member surface treated ball type unjf thread series
inching mechanism roller; ductile iron; controlled hardness of 210 brinell max; 7 in nom lg, 4 in nom od, 1.740 in nom id; 42 lugs, 5 holes 0.375-16 unc-2b
2.0000" bore diameter second bearing mounting hole 1.000 in. dia min to 1.001 in. dia max, centered 3.500 in. right of vert cl, 0.750 in. below horiz cl; third bearing mounting hole 0.750 in. dia min to 0.751 in. dia max centered 5.500 in. left of vert cl, 1.250 in. below horiz cl; 0.250 in. dia thru hole from base to first bore, tap 0.125 ptf; two 0.250-20unc-2b tapped thru holes in face centered 1.120 in. right of third bearing mounting hole, 0.380 above
