8-18X1 1/2 Phillips Indented Hex Washer Self Tapping Screw Type AB Fully Threaded Zinc Bake 3000 pcs

8X3/8 #6HD Phillips Pan High Low Screw Fully Threaded Zinc Bake. High-Low thread for use in plastic, nylon, wood or other low-density materials. Thread design reduces driving torques, enhances resistance to thread stripping, improves pullout strength and lessens the risk of cracking the work piece. Pan head screws are a common style that can substituted in most applications for round, truss or binding heads.

8X1 1/4 Phillips Bugle Head Full Thread Self Drilling Drywall Screw Black Phosphate. Concrete screws cut their own threads when used in concrete, block or brick. Carbide bits are recommended for use in masonry. Bugle head screws are commonly used for drywall because it distributes bearing stress over a wider area than a flat head.

9X2 Phillips Recess Bugle Hd Coarse Thread Drywall Scr Blk Phosphate Particle Board. Bugle head screws are commonly used for drywall because it distributes bearing stress over a wider area than a flat head.

10-24X1/2 Unslotted Indented Hex Washer Thread Cutting Screw Type 23 Fully Threaded Zinc. Thread-Cutting Type-23 screws provide excellent chip clearance with minimum tightening torques. Steel: Used in cast iron and zinc, aluminum die castings, and plastics. Stainless: Material into which the screw is to cut threads should have a lower hardness. Indented hex washer head offers advantages of hex head, plus greater protection to mating surface.

6X5/8 Phillips Full Contour Truss Self Tapping Screw Type A Fully Threaded Black Oxide. Type A thread for self starting in thin (.015 - .050 inch thick) metal or resin-filled plywood. Truss head screws are weaker than pan or round heads but preferred in applications where minimal clearance exists above the head. Modified truss heads offer low clearance and an extra large bearing surface. Commonly used to attach metal lathe to metal studs.