Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K874511-011 found under Gear Bevel by Kaman Aerospace Corporation. The National Stock Number assigned to this part is 3020015055730, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like K874511-011.