Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 82-16-420-20 found under Nrp Stud Fastener A by Southco Inc. The National Stock Number assigned to this part is 5307016635562, 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 82-16-420-20.