National stock numbers that we have updated recently with new information.
shank diameter 0.497 minimum and 0.498 maximum hardness rating 40 rockwell c minimum shank steel material grip length 4.5 minimum and 4.52 maximum
undercut diameter 1.360 inches minimum and 1.380 inches maximum undercut width 0.560 inches minimum and 0.580 inches maximum
hole diameter 0.250 inches diameter 0.250 inches overall thickness 0.329 inches
thread length 0.294 inches minimum and 0.375 inches maximum thread direction right-hand thread class 3a
thread length 1.376 inches minimum and 1.500 inches maximum thread direction right-hand thread class 3a
body outside diameter 1.3700 inches minimum and 1.3800 inches maximum body inside diameter 1.1234 inches minimum and 1.1239 inches maximum
thread class 3b thread direction right-hand locking feature prevailing torque all metal design
thread class 2a thread direction right-hand thread length 0.750 inches maximum
length 1.812 height 0.531 thread length 0.375 single mounting facility
rubber synthetic ams 3207 or mil-r-6855 1.5 in. od 0.75 in. length three 0.281 in. diameter holes equally spaced 0.625 in. diameter bolt circle shank 1.094 in. diameter flange 0.188 thk
aluminum alloy mil-a-21180 composition a356 temper t61 anodized 4.375 in. diameter 1.11 in. width
aluminum alloy mil-a-21180 anodized 6.5 in. diameter 1.368 in. width