Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1549 found under Contact Set Collector Ring by Kearfott Corporation. The National Stock Number assigned to this part is 5977000900025, and the Federal Supply Class is 5977 Electrical Contact Brushes And Electrodes. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1549.