5/16-24 x 5/8 Fine Thread Button Head Socket Cap Screw Plain MST188 These 8-15 x 1 1/2

These 8-15 x 1 1/2 Phillips round head full body 2/3 thread wood screws are made of zinc-plated steel for durability and corrosion resistance

which makes it easy to identify

1/4-20 x 3/8 Slotted Pan Thread Cutting Screw Type F Fully Threaded Zinc:

These bolts are plain (without a finish)

5/16-24 x 5/8 Fine Thread Button Head Socket Cap Screw Plain MST188 These 8-15 x 1 1/2This 5 16 24 x 5 8 Fine Thread Button Head Socket Cap Screw Plain is made of steel with a plain finish. It has a button head with a 5 16 24 fine thread and a length of 5 8 inches. This screw is designed for use in a variety of applications, including automotive, industrial, and construction. It is corrosion resistant and has a high tensile strength. The button head provides a low profile and a clean appearance.