Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SW-51104S08R found under Valve Swivel Rotolk by Nordco Rail Services And Inspection. The National Stock Number assigned to this part is 4820015858486, 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 SW-51104S08R.