Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 312D3 found under Screw Machine by Fyr Fyter Co Inc. The National Stock Number assigned to this part is 5305002084628, 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 312D3.