Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS5312E3-6J found under Scr Six Lobe Recess by B And B Specialties Inc. The National Stock Number assigned to this part is 1680015255016, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NAS5312E3-6J.