Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number H4646-12 found under Hot Line Stick by Chance A B Co. The National Stock Number assigned to this part is 5120004022371, 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 H4646-12.