Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NS-4070 found under Cover Access by Tyco Valves And Controls Lp. The National Stock Number assigned to this part is 5340011033320, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NS-4070.