Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D170000A4992 found under Resistor Fixed Film by Caddock Electronics Inc. The National Stock Number assigned to this part is 5905008520712, and the Federal Supply Class is 5905 Resistors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D170000A4992.