Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DE5541H0501 ITEM 5 found under Wrench Socket by Huntington Electric Inc. The National Stock Number assigned to this part is 5120001692885, 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 DE5541H0501 ITEM 5.