Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 000561 found under Screwmachine by Sauer Compressors Usa Inc. The National Stock Number assigned to this part is 5305016827097, 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 000561.