Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 399 84 1000 found under Stud Plain by Buffalo Pumps Inc. The National Stock Number assigned to this part is 5307015653229, and the Federal Supply Class is 5307 Studs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 399 84 1000.