Used on f/a-18 e/f. flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style fastener, blind internally threaded, external sleeve, titanium, reduced flush head, self-locking
2a thread class right-hand 1.00" thread length flat countersunk head style 20 thread quantity per inch oem is accurate mfg products indianapolis 3174729000 unc thread series
Used on ch-53a/d/e. stud assembly flat head cross recess spacer material is 300 series cres per astm A666 or astm A240; spring material is 302 cres per astm A313 or ams-qq-s-763; cup material is 300 series cres per astm A167, astm A240, astm A582 or astm A666 passivate surface treated
Used on ch-53a/d/e. stud assembly flat head cross recess spacer material is 300 series cres per astm A666 or astm A240; spring material is 302 cres per astm A313 or ams-qq-s-763; cup material is 300 series cres per astm A167, astm A240, astm A582 or astm A666 passivate surface treated