6-13 x 1 3/4 Flat Head Nibbed Square Drive Deep Thread Wood Screw Type 17 2/3 Thread Zinc & Bake 3PP which means it has a

which means it has a hex-shaped head with a washer built in

this locknut delivers exceptional performance and longevity

finished look when countersunk into wood or other materials

This #12 x

Their split design ensures a secure hold

6-13 x 1 3/4 Flat Head Nibbed Square Drive Deep Thread Wood Screw Type 17 2/3 Thread Zinc & Bake 3PP which means it has a6 13 x 1 3 4 Flat Head Nibbed Square Drive Deep Thread Wood Screw Type 17 2 3 Thread Zinc & Bake This screw is designed for use in wood applications. It has a flat head with a nibbed design that helps to prevent the screw from slipping out of the wood. The square drive allows for easy driving with a standard square drive bit. The deep thread design provides a strong hold in wood. The Type 17 2 3 thread is a coarse thread that is commonly used in wood