Used on pratt and whitney model ft4a-2 and ft4a-6 gas turbines, whec 378 ft u. s. coast guard vessels. 3a thread class right-hand 3.625" thread length double hexagon head style 24 thread quantity per inch unf thread series
Used on f414 engine (f/a-18 f&g aircraft)aircraft hornet f/a-18. 3a thread class right-hand 0.630" thread length flat countersunk undercut head style 20 thread quantity per inch furnished with one rubber o ring unjf thread series
Used on pratt and whitney gas turbine model ft4a2, whec 378 ft u. s. coast guard vessels. 3a thread class right-hand 0.750" thread length double hexagon head style 28 thread quantity per inch unf thread series