Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4028971P12 found under Stud Shouldered And Stepped by Precision Threaded Products Inc. The National Stock Number assigned to this part is 5307003480225, 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 4028971P12.