Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WU17543 found under Screw Drive by Navair And Navsea Managed. The National Stock Number assigned to this part is 5305002737527, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like WU17543.