5/16-18 x 1 1/2 Slotted Indented Hex Washer Thread Cutting Screw Type 1 Fully Threaded Zinc 1-8 NE which means that it sits

which means that it sits flush with the surface of the material it is being used to secure

The thread cutting design of the screw allows it to cut its own threads as it is driven into the material

while the indented hex washer head provides a secure hold and prevents the screw from loosening

The 7-19 x 5/8 Phillips Pan Self Tapping Screw Type AB is a fully threaded screw made of 18-8 stainless steel

5/16-18 x 1 1/2 Slotted Indented Hex Washer Thread Cutting Screw Type 1 Fully Threaded Zinc 1-8 NE which means that it sits5 16 18 x 1 1 2 Slotted Indented Hex Washer Thread Cutting Screw Type 1 Fully Threaded Zinc: This screw features a 5 16 18 thread size, a 1 1 2 inch length, and a slotted indented hex washer head. It is a Type 1 screw, which means it has a fully threaded shank. The zinc plating provides corrosion resistance. This screw is commonly used in metal to metal applications where a strong, secure hold is required. Its indented hex washer head allows for easy