8-18 x 3/4 #6HD Six Lobe Pan High Low Screw Fully Threaded Black Zinc and Bake 8-32 57 pitch refers to the

57 pitch refers to the distance between adjacent threads

6-20 x 1 1/2 Phillips Pan Self Tapping Screw Type B Fully Threaded 18-8 Stainless Steel

These 10-16 x 6 Phillips flat self-drilling screws are made of zinc-plated steel for corrosion resistance

This 4-40 x 5/8 Slotted Round Machine Screw is a fully threaded screw with a black zinc finish

These screws are also self-countersinking

8-18 x 3/4 #6HD Six Lobe Pan High Low Screw Fully Threaded Black Zinc and Bake 8-32 57 pitch refers to the8 18 x 3 4 #6HD Six Lobe Pan High Low Screw Fully Threaded Black Zinc and Bake This screw is made of steel and has a black zinc and bake finish. It has a six lobe pan head and is fully threaded. The screw is 3 4 inches long and has a diameter of #6. It is designed for use in high low applications.