Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W2907 found under Valve Assy Air Regu by 3M Company. The National Stock Number assigned to this part is 4240011090715, and the Federal Supply Class is 4240 Safety And Rescue Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like W2907.