Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 900572 4.75 1 found under Stud Continuous Thread by Accurate Screw Machine Co. The National Stock Number assigned to this part is 5307015055962, 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 900572 4.75 1.