9-10 x 3 Square Phil #8Flat w/Nibs Deep Thread Wood Screw 2/3 Thread Type 17 Zinc DXFDPT The thumb screw has a

The thumb screw has a knurled head for easy gripping and tightening

these bolts feature a fully threaded shank that provides maximum holding power

These 6 x 1 3/4" Six-Lobe (Torx) Bugle Head Coarse Thread Sharp Point Deck Screws are designed for superior holding power in outdoor applications

They have a 6-lobe flat head and are self-drilling

9-10 x 3 Square Phil #8Flat w/Nibs Deep Thread Wood Screw 2/3 Thread Type 17 Zinc DXFDPT The thumb screw has a9 10 x 3 Square Phil #8 Flat w Nibs Deep Thread Wood Screw 2 3 Thread Type 17 Zinc are designed for use in wood applications. They have a square drive, which requires a square drive bit to install or remove. The #8 flat head is countersunk into the wood surface, and the nibs help to prevent the screw from splitting the wood. The deep thread design provides a strong hold in wood, and the 2 3 thread type means that the screw has threads on the bottom