Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 67578-SS-12-SLD found under Screw Shoulder by Accurate Screw Machine Co. The National Stock Number assigned to this part is 5305013437232, 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 67578-SS-12-SLD.