3b thread class right-hand flat countersunk undercut head style 32 thread quantity per inch top surface of head, dark blue; o ring seal attached; rust inhibitor in threads cadmium surface treated
Used on aircraft, c-2a; aircraft, f-111; aircraft, hawkeye e-2c; aircraft, prowler ea-6b. 3b thread class right-hand flat countersunk undercut head style 32 thread quantity per inch o ring seal attached cadmium surface treated
2b thread class right-hand flat countersunk undercut head style 32 thread quantity per inch furnished with .o. ring seal attached cadmium surface treated
