Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BB64683 found under Weight Counterbalan by Sei Industries Ltd. The National Stock Number assigned to this part is 3040200048020, 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 BB64683.