Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BACR12BM211 found under Retainer Packing by Greene Tweed And Co. The National Stock Number assigned to this part is 5330010237640, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BACR12BM211.