Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PT4086 found under Handle Socket Wrench by Bonney Forge Valve. The National Stock Number assigned to this part is 5120002217961, and the Federal Supply Class is 5120 Hand Tools Nonedged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PT4086.