Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number U945520100 found under Ratchet Head Socket Wrench Handl by Jige International. The National Stock Number assigned to this part is 5120016253764, 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 U945520100.