Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W89974 found under Hardware Kit Electronic Equipmen by Penny And Giles Aerospace Ltd. The National Stock Number assigned to this part is 5340010128241, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like W89974.