Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A78C2045-1 found under Holder Collimator L by Telex Computer Products Inc. The National Stock Number assigned to this part is 4920000700210, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A78C2045-1.