Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RB18657 found under Plate Strainer by Crane Company. The National Stock Number assigned to this part is 1660011595289, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RB18657.