Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B00 4 8 found under Plug Anode Retainin by Gea Bloksma B V. The National Stock Number assigned to this part is 5342171088127, 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 B00 4 8.