Used on 6115-01-561-7788; gen set, diesel engine. 19 1st end thread quantity per inch adapter, pipe 3/8 inch bspt to 5/8 inch 37 deg zinc surface treated bsp.pl 1st end thread series
Used on nsn 2355-01-587-2316. 2a 2nd end thread class 18 2nd end thread quantity per inch female pipe adapter rigid, threaded internal nptf 1st end thread series