Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number G2020W-2F15B13B-99B51-S40 found under Pump Rotary by Barnes John S Corp. The National Stock Number assigned to this part is 4320013689825, and the Federal Supply Class is 4320 Power And Hand Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like G2020W-2F15B13B-99B51-S40.