Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20520HSS 190 12A832X1 4B1032X3 8 found under Stud Shouldered by Accurate Screw Machine Co. The National Stock Number assigned to this part is 5307015212525, 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 20520HSS 190 12A832X1 4B1032X3 8.