Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GK41 found under by Chalmers And Kubeck Inc. The National Stock Number assigned to this part is 4820016339778, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GK41.