Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2-288-218-630 found under Collar Set Spacing by Viking Pump Inc. The National Stock Number assigned to this part is 3230014979846, and the Federal Supply Class is 3230 Tools Attachments For Woodwork Machinery. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2-288-218-630.