Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3939-60-16BEM found under Screw Close Toleran by Dassault Aviation. The National Stock Number assigned to this part is 5305143693506, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3939-60-16BEM.