2a single threaded stud thread class 0.141" single threaded stud thread length 40 single threaded stud thread quantity per inch disc unc single threaded stud thread series
2a single threaded stud thread class 0.141" single threaded stud thread length 40 single threaded stud thread quantity per inch disc unc single threaded stud thread series
3b single pressure connection thread class 3.000" overall length 18 single pressure connection thread quantity per inch essential to weapon systems performance cylindrical unf single pressure connection thread series