8-18 x 1/4 Slotted Indented Hex Washer Self Tapping Screw TypeB Serrated Fully Thread Zinc WEI188 They have a square pan

They have a square pan head with a self-drilling point

The 8-18 x 3/4 Phillips Indented Hex Washer Self Tapping Screw Type AB Fully Threaded Zinc is a versatile and durable fastener designed for a wide range of applications

Its large diameter helps distribute the load over a wider area

and a partial thread length

this screw is ideal for projects requiring a longer fastener

8-18 x 1/4 Slotted Indented Hex Washer Self Tapping Screw TypeB Serrated Fully Thread Zinc WEI188 They have a square panThese 8 18 x 1 4 Slotted Indented Hex Washer Self Tapping Screw Type B Serrated Fully Thread Zinc are designed for use in a variety of applications. They are made of zinc plated steel for durability and corrosion resistance. The slotted indented hex washer head provides a secure hold and prevents the screw from slipping. The serrated threads provide a strong grip and prevent the screw from loosening. These screws are fully threaded for maximum holding