3b 1st end thread class 18 1st end thread quantity per inch polytetrafluoroethylene coated black, swaged end, distance 0.410 in. min 0.435 in. max into bore unjs 1st end thread series
polytetrafluoroethylene coat black per deutsch spec DMCPS1009 on external permaswage end surface to a distance of 0.410 in. min 0.435 in. max into the i.d.
3b 1st end thread class 20 1st end thread quantity per inch polytetrafluoroethylene coated black, swaged end, distance 0.410 in. min 0.435 in. max into bore unjs 1st end thread series
3a 1st end bulkhead thread class 20 all ends thread quantity per inch color yellow; pressed in fit restrictor 0.220 in. dia, 0.250 in. lg, chamfer 45 deg anodize surface treated unjf all ends thread series