Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NTSS-66X72X2 found under Ring Retaining by Diequa Corporation. The National Stock Number assigned to this part is 5325015550138, 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 NTSS-66X72X2.