Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MSM283-1K found under Control Electric Light by Keystone Intl Inc. The National Stock Number assigned to this part is 6220016106162, and the Federal Supply Class is 6220 Electric Vehicular Lights And Fixtures. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MSM283-1K.