8-18 x 1/2 Phillips Full Contour Truss Self Tapping Screw Type B Fully Threaded Black Oxide LHWH The washer is also helpful

The washer is also helpful in preventing galvanic corrosion between the bolt and the material being fastened

The self-drilling tip makes it easy to drive the screw into metal without the need for a pilot hole

The screw is 8mm in length and has a diameter of 5mm

This 1/4-20 x 1 1/4 Slotted Fillister Head Machine Screw is fully threaded and made of zinc

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8-18 x 1/2 Phillips Full Contour Truss Self Tapping Screw Type B Fully Threaded Black Oxide LHWH The washer is also helpfulThese 8 18 x 1 2 Phillips Full Contour Truss Self Tapping Screw Type B Fully Threaded Black Oxide are designed for use in metal applications. They have a sharp point and a Type B thread that provides excellent holding power. The full contour truss head provides a large bearing surface, which helps to prevent the screw from stripping out. The black oxide finish provides corrosion resistance. These screws are available in a variety of lengths to meet