Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 631339 found under Cylinder Assembly L by Clark Material Handling Co. The National Stock Number assigned to this part is 2590003592958, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 631339.