Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HQ524-11-4AA found under Filter Band Pass by Teledyne Wireless Llc. The National Stock Number assigned to this part is 5915013306483, and the Federal Supply Class is 5915 Filters And Networks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HQ524-11-4AA.