Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 16-81383M found under Stud Plain by E P Barrus Limited. The National Stock Number assigned to this part is 5307013520683, 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 16-81383M.