Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3155214 found under Pin Piston by W B Arnold Company Inc. The National Stock Number assigned to this part is 4310012592126, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3155214.