8-18 x 1/4 Phillips Pan Self Tapping Screw Type B Fully Threaded Black Zinc NSTB They are commonly used in

They are commonly used in metal applications

and the serrated flange helps to prevent the screw from loosening

The external washer head provides a large bearing surface for even load distribution

The square head allows for easy driving with a wrench

this bolt features a square head for easy installation and removal with a wrench

8-18 x 1/4 Phillips Pan Self Tapping Screw Type B Fully Threaded Black Zinc NSTB They are commonly used in8 18 x 1 4 Phillips Pan Self Tapping Screw Type B Fully Threaded Black Zinc These screws are designed for use in metal and plastic applications. They have a Phillips pan head with a #2 square drive, and are fully threaded for maximum holding power. The black zinc coating provides corrosion resistance. * Size: 8 18 x 1 4 * Head: Phillips pan * Drive: #2 square * Thread: Fully threaded * Coating: Black zinc * Material: Steel * Quantity: 100