Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 863645 2633 MCS 6 found under Pin Spring by Diamond Power International Inc. The National Stock Number assigned to this part is 5315012207998, and the Federal Supply Class is 5315 Nails Machine Keys And Pins. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 863645 2633 MCS 6.