Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N3-7861PC107 found under Soot Blower Element by The Babcock And Wilcox Company. The National Stock Number assigned to this part is 4410001421999, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like N3-7861PC107.