Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number US-70589-1 ITEM 44 found under Stud Plain by John Crane Inc. The National Stock Number assigned to this part is 5307012819148, 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 US-70589-1 ITEM 44.