Thread Size: 4.8 mm, No.10, #10; Thread Length: 1-1/2 inch; Length is measured from under the flange Hex Drive Size: 8 mm; Flange Diameter (max): 10.5 mm Material: Crafted from 410 Stainless Steel for enhanced hardness, wear resistance, and heat tolerance compared to standard 304 grades; Highly demanded in industries like automotive, building, machinery, electronics and more Advantages: These screws eliminate pre-drilling; The hex washer head distributes pressure evenly to prevent material damage, while the external hex drill tail ensures secure tightening with a wrench; Perfect for metal, plastic, or wood applications where durability and ease of installation matter Packaged with Hex Socket Wrench: Each set includes a hex socket wrench and eliminates the need for additional tool