Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SB30MMK found under Bit Wire Wrapping Tool by O K Intl Inc. The National Stock Number assigned to this part is 5120011451389, 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 SB30MMK.