Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W411 14 19 found under Sleeve And Slide Di by Rolls Royce Marine As Avd Norwinch. The National Stock Number assigned to this part is 4820251501938, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like W411 14 19.