Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B74-9 found under Dummy Coupling Automotive Air Br by Crane Company. The National Stock Number assigned to this part is 2530005455406, and the Federal Supply Class is 2530 Vehicular Brake Steering Axle Wheel And Track Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B74-9.