Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KTC HSQ531030-53 found under Wedge Timber by Kipper Tool Company. The National Stock Number assigned to this part is 5120005016010, 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 KTC HSQ531030-53.