Used on f-15 aircraft. 3a thread class right-hand 0.531" thread length flat countersunk head style 0.250" grip length 24 thread quantity per inch unjf thread series
Used on a-10 aircraft. 3a thread class right-hand flush countersunk head style 1.000" grip length 24 thread quantity per inch 22300 double pounds per square inch shear strength nickel surface treated unjf thread series