Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HRB8603-10 found under Removal Tool Fastener Hand by Huck International Inc. The National Stock Number assigned to this part is 5120012460713, 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 HRB8603-10.