Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B107.2 found under Socket Socket Wrench by American Society Of Mechanical. The National Stock Number assigned to this part is 5130002218015, and the Federal Supply Class is 5130 Hand Tools Power Driven. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B107.2.