9 x 2 1/2 6 lobe Flat w/Nibs Deep Thread Wood Screw Type 17 2/3 Thread Black Oxide KSWSMS which means that it has

which means that it has a coarse thread pitch

45 x 20 ISO14581 Metric 6-Lobe Flat Machine Screw Full Thread 18-8 Stainless Steel is a high-quality screw that is perfect for a variety of applications

It is corrosion-resistant and has a black oxide finish for added durability

extending the screw's lifespan and enhancing its durability in harsh environments

They have a coarse thread type 17

9 x 2 1/2 6 lobe Flat w/Nibs Deep Thread Wood Screw Type 17 2/3 Thread Black Oxide KSWSMS which means that it has9 x 2 1 2 6 lobe flat with nibs deep thread wood screw type 17 2 3 thread black oxide is a type of screw that is commonly used in woodworking applications. It has a 6 lobe head that is designed to be driven with a hex key, and a deep thread that provides a strong hold in wood. The nibs on the screw help to prevent it from splitting the wood, and the black oxide finish provides corrosion resistance. This type of screw is often used in applications