Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1133-2463-11 found under Filterlow Pass by Southwest Research Institute. The National Stock Number assigned to this part is 5915016843635, 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 1133-2463-11.