8-11 x 4 Flat Head Nibbed Square Drive Deep Thread Wood Screw Type 17 2/3 Thread Black Ox DXF17DPT The screw is 2 1/4

The screw is 2 1/4 inches long and has a flat head with a Phillips drive

this hex jam nut is an essential component for reliable and secure fastening

The screw is undercut

The 5/16-24 x 3/4 Hex Cap Screw Grade 9 DFAR EcoGuard USA is a high-quality fastener designed for use in demanding applications

This 1/4-20 x 2 1/4 Hex Tap Bolt is made of steel and has a Grade 8 rating

8-11 x 4 Flat Head Nibbed Square Drive Deep Thread Wood Screw Type 17 2/3 Thread Black Ox DXF17DPT The screw is 2 1/4**8 11 x 4 Flat Head Nibbed Square Drive Deep Thread Wood Screw Type 17 2 3 Thread Black Ox:** This screw is designed for use in wood applications. It has a flat head with nibs that help to countersink the screw into the wood surface. The square drive allows for easy installation with a square drive bit. The deep thread provides a strong hold in wood. The black oxide finish provides corrosion resistance.