Hex Head Cap Screws are designed for easy assembly into a tapped hole. Hex Cap Screws meet SAE specifications with a specially designed washer face under the head and a chamfered point. Grade 5 is the most common grade used in manufacturing assembly. Yellow Zinc fasteners have been plated with a clear zinc coating and are then coated again with a yellow dichromate. Yellow Zinc offers a modest amount of corrosion resistance, slightly higher than clear Zinc. Tensile Strength: 120,000 psi minimum.