GG-K-266B, FEDERAL SPECIFICATION: KEY, COWL FASTENER (02 APR 1964) [S/S BY A-A-2561]

GG-K-266B, FEDERAL SPECIFICATION: KEY, COWL FASTENER (02 APR 1964) [S/S BY A-A-2561]., This specification covers one type of key for use in locking and unlocking cowl fasteners on airplanes or other equipment as required.