Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 394793-B21 found under Extender Card Electronic Test by Hewlett Packard Australia Ltd. The National Stock Number assigned to this part is 5998015606422, and the Federal Supply Class is 5998 Electrical And Electronic Assemblies Boards Cards And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 394793-B21.