5/16-20 x 1 Slotted Indented Hex Washer Self Tapping Screw Type A Fully Threaded Zinc CNPF It features a square drive

It features a square drive head for easy installation and a flat head that sits flush with the surface of the wood

The screw also has a metric thread

The combination Phillips and slotted drive allows for easy installation using either a Phillips head screwdriver or a flathead screwdriver

The M16 thread diameter and 30 mm length ensure a secure and reliable connection

The 3/8 x 1 1/4 Hex Lag Screw Zinc Gimlet Point is a versatile and durable fastener designed for heavy-duty applications

5/16-20 x 1 Slotted Indented Hex Washer Self Tapping Screw Type A Fully Threaded Zinc CNPF It features a square driveThe 5 16 20 x 1 Slotted Indented Hex Washer Self Tapping Screw Type A Fully Threaded Zinc is a versatile and durable fastener designed for a wide range of applications. It features a slotted indented hex washer head that provides a secure grip during installation and prevents slippage. The self tapping design eliminates the need for pre drilling, making it easy to install in a variety of materials. The fully threaded shank ensures maximum holding