10-16 x 3 1/2 Square Drive Flat Head Fully Threaded Self Drilling Screw Zinc & Bake M20-1.50 The Grade 8 rating indicates

The Grade 8 rating indicates that this bolt is suitable for high-strength applications

Its fine thread design provides a strong grip and prevents loosening

durable fastener designed for various industrial and construction applications

Its 1/2-inch across flats design provides a secure grip

The plain finish provides corrosion resistance and a professional appearance

10-16 x 3 1/2 Square Drive Flat Head Fully Threaded Self Drilling Screw Zinc & Bake M20-1.50 The Grade 8 rating indicatesThese 10 16 x 3 1 2" Square Drive Flat Head Fully Threaded Self Drilling Screws are made of zinc and bake, making them ideal for use in a variety of applications. The square drive head provides a secure grip, while the flat head sits flush with the surface of the material. The fully threaded design ensures a strong hold, and the self drilling tip eliminates the need for pre drilling. These screws are perfect for use in metal, wood, and plastic.