Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DW20-20X found under Caster Swivel by Payson Castersinc. The National Stock Number assigned to this part is 5340010476624, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like DW20-20X.