Used on fixed wing aircraft, boeing model757. subassembly is duct instl-sta 430to 585 flight deck conditioned air below floor; refer to boeing i.p.c. BOE2321 21-22-05-01 no. 20
Used on fixed wing aircraft, boeing model757. subassembly is outlet assy sidewall air conditioning; refer to boeing i.p.c. BOE2354 21--23-02-34a no. 290
3a thread class right-hand 0.345" thread length flat chamfer head style 0.044" hole diameter 32 thread quantity per inch navy special project silver surface treated unrf thread series
3a thread class right-hand 0.720" thread length flat chamfer head style 0.061" hole diameter 24 thread quantity per inch navy special project silver surface treated unrf thread series