Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PUB70B1 found under Pump Fuel by Ambac International Corporation. The National Stock Number assigned to this part is 2910000301540, and the Federal Supply Class is 2910 Engine Fuel System Components Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PUB70B1.