1/4-20 x 3/8 Weld Screw with Nibs Under The Head Fully Threaded Plain MDWIA2 which means that it can

which means that it can create its own hole in the material

They can be used to secure wood

It features a unique thread rolling design that provides superior holding power and resistance to vibration loosening

These 10-16 x 1 1/2 6 Lobe Wafer Head F/T Self Drilling Screws are made of zinc-plated steel and have a 6-lobe wafer head that provides a large bearing surface for increased holding power

Its unthreaded shank provides a secure hold

1/4-20 x 3/8 Weld Screw with Nibs Under The Head Fully Threaded Plain MDWIA2 which means that it can1 4 20 x 3 8 Weld Screw with Nibs Under The Head Fully Threaded Plain is a type of screw designed for welding applications. It features a 1 4 20 thread size, which indicates a diameter of 1 4 inch and 20 threads per inch. The screw has a length of 3 8 inch, excluding the head. The screw's head has nibs or projections underneath, which help to hold the screw in place during the welding process. The fully threaded design means that the screw has threads