Type: #8 x 2", 410 Stainless Steel, Bright Finish. | Screw Length: 3/4"(excluding the head height); Hex Head Diameter: 6.9mm; Head Washer Diameter: 8.5mm; Head Height: 3.8mm. | Quantity: 50 PCS; External Hex Drive Size: 7mm. | The drilling tek screws are 100% 410 stainless steel which is one of the highest forms of corrosion resistant steel. | Ideal use for wood, metal or other tough materials and known for their effecient application performance and endurance.