Used on contractor logistics lifetime support (crls), hydraulic excavator type 2 (hyex) (model 230 lcrd hx2) nsn 3805-01-463-0806, tm5-3805-280-24-p. 3a 1st end thread class expander .75-16 x .875-14 w/o-ring unf 1st end thread series
Used on compressed gas flask/cylinder. 3a 2nd end thread class 12 2nd end thread quantity per inch stp-inlet/outlet drain plug un 1st end thread series
Used on various naval applications. 3a all ends thread class altered item drawing; critical look alike per HS2053 passivate surface treated unf 2nd end thread series
Used on 3930-01-417-2886;truck,forklift 1000m. 2a 2nd end thread class 12 2nd end thread quantity per inch straight thread reducer/expander un 2nd end thread series