6-13 x 1 1/4 Flat Head Nibbed Square Drive Deep Thread Wood Screw Type 17 2/3 Thread Black Ox WS188B round metal washer with a

round metal washer with a hole in the center

The self-tapping design allows the screw to create its own threads as it is driven in

Its flat head sits flush against the surface

this screw boasts a Grade 9 rating for superior load-bearing capacity

Its slotted indented hex head provides a secure grip for driving and prevents slippage

6-13 x 1 1/4 Flat Head Nibbed Square Drive Deep Thread Wood Screw Type 17 2/3 Thread Black Ox WS188B round metal washer with a6 13 x 1 1 4 Flat Head Nibbed Square Drive Deep Thread Wood Screw Type 17 2 3 Thread Black Ox are designed for use in wood applications. They have a flat head with a nib that helps to countersink the screw into the wood, and a square drive that provides a secure grip for driving. The deep thread design provides increased holding power, and the black oxide finish provides corrosion resistance. These screws are ideal for a variety of projects, including