0.3900" overall length one end counterbored 0.7500 in. plus 0.0100 minus 0.0000 in. dia by 0.2000 in. plus 0.0100 minus 0.0100 deep 17c solid, plain, no outside flanges
3.9900" overall length criticality code changes affect when parts are screened cadmium surface treated 17c-3 solid, plain, no outside flanges, internal flange at both ends