Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MIL-W-19928 TY1 found under Wrench Box by General Services Administration. The National Stock Number assigned to this part is 5120001848682, 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 MIL-W-19928 TY1.