Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BSM-2000-12A found under Tricollar Level Assembly by Bluesky Mast Inc. The National Stock Number assigned to this part is 3040016027075, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BSM-2000-12A.