Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N7-640-04-5308 found under Cap Protective Dust by Applications Techniques Hydraulique. The National Stock Number assigned to this part is 5340143270218, 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 N7-640-04-5308.