Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BACS12CK3U12 found under Screw Machine by Champion Aviation Inc. The National Stock Number assigned to this part is 5305011743528, 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 BACS12CK3U12.