8-15 x 3 1/2 Phillips Indented Hex Washer Self Tapping Screw Type A Fully Threaded Zinc KPPHC They have a full thread

They have a full thread and a pan head with a square drive

while the 1 1/4" diameter provides ample support for a wide range of bolts and screws

The bolt has a ribbed neck

making it suitable for applications where a wider bearing surface is required

and they can be used in both indoor and outdoor environments

8-15 x 3 1/2 Phillips Indented Hex Washer Self Tapping Screw Type A Fully Threaded Zinc KPPHC They have a full threadThese 8 15 x 3 1 2 Phillips indented hex washer self tapping screws are Type A fully threaded screws made of zinc. They are designed for use in a variety of applications, including metal, wood, and plastic. The Phillips indented hex washer head provides a secure hold, while the self tapping design allows for easy installation without the need for pre drilling. The zinc coating provides corrosion resistance, making these screws ideal for both indoor