6-20 x 1 1/2 Slotted Indented Hex Washer Self Tapping Screw Type B Fully Threaded Zinc 7/8-14 N1610 It is made of zinc-plated

It is made of zinc-plated steel and has a series of teeth on the inside that bite into the surface of the bolt or nut

or metal to metal

and they are available in a variety of lengths to suit your specific needs

They are also great for use in outdoor projects

The 8-32 x 1 7/8 Slotted Pan Machine Screw Fully Threaded Zinc is a versatile and durable fastener designed for a wide range of applications

6-20 x 1 1/2 Slotted Indented Hex Washer Self Tapping Screw Type B Fully Threaded Zinc 7/8-14 N1610 It is made of zinc-platedThese 6 20 x 1 1 2 Slotted Indented Hex Washer Self Tapping Screw Type B Fully Threaded Zinc are designed for use in a variety of applications. They are made of durable zinc plated steel and feature a slotted indented hex washer head for easy installation. The self tapping design allows them to create their own threads as they are driven into the material, eliminating the need for pre drilling. These screws are fully threaded for maximum holding power