Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 173 11642 1 found under Pin Safety by Communications And Power Industries. The National Stock Number assigned to this part is 2590012304694, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 173 11642 1.