Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KNNS428JM-11 found under Stud Locked In by Alcoa Fastening Systems Ltd. The National Stock Number assigned to this part is 5307002966731, 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 KNNS428JM-11.