Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M871JACK found under Jack Hydraulic Hand by Dynaweld Inc. The National Stock Number assigned to this part is 5120013134761, 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 M871JACK.