About This Fast Self Tapping: Drill-bit-shaped tip of the self drilling screws allows the screws to be used without a pilot hole, saving user time. Used for metal-to-metal or metal-to-wood connections, commonly used in thin metal applications such as working with steel studs Durable 410 Stainless Steel: Our self tapping sheet metal screws are made of 410 stainless steel, corrosion resistant, rustproof, high strength, no deformation. 410 stainless steel is magnetic Fine Workmanship: black self tapping screws with hex washer head external hex drive prevent slippage and ensure a strong hold. Deep and clean threads tighten the connection Packed Well: Package includes 320Pcs #6 x 1/2 Inch black self tapping screws for metal (hex washer head), and an extra socket bit adapter Wide Applications: Self drilling screws for metal, wood, plastic. Self-drilling screws can be used for a wide variety of application. For metal, include working with metal roofing, HVAC and ductwork, and steel frames. For wood in the construction, repair, or maintenance of sheds and outbuildings. For plastic in certain applications and environments Overview Material : Stainless Steel Head Style : Hex Item dimensions L x W x H : 5.9 x 4.3 x 0.67 inches Exterior Finish : Zinc Thread Size : #6-20
