Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 60-1000-2520 found under Stud Pull Up by Bollhoff Inc. The National Stock Number assigned to this part is 5307012174870, 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 60-1000-2520.