Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E28-6-4SAM4SL found under Caster Rigid by Rwm Casters Corp. The National Stock Number assigned to this part is 5340016014959, 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 E28-6-4SAM4SL.