Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C-45941Y found under Holder Screwdriver Bit by Chicago Pneumatic Tool Co. The National Stock Number assigned to this part is 5130002039620, and the Federal Supply Class is 5130 Hand Tools Power Driven. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C-45941Y.