Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 620 06 404 06 found under Bulkhead Adapter by Hydraulics International Inc. The National Stock Number assigned to this part is 5999015866826, and the Federal Supply Class is 5999 Miscellaneous Electrical And Electronic Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 620 06 404 06.