Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 660 12B17S5 16 found under Cap Protective Dust And Moisture by Glenair Inc. The National Stock Number assigned to this part is 5340016601253, 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 660 12B17S5 16.