Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NA0276M4-10 found under Insertscrew Thread by Kato Fastening Systems Inc. The National Stock Number assigned to this part is 5325016945203, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NA0276M4-10.