#8 x 3/8 #6HD Phillips Pan High Low Screw Fully Threaded Zinc Bake - Pkg of 10000

1/4-20X1 Phillips Flat Thread Cutting Screw Type F Fully Threaded Zinc Bake. Thread-Cutting Type-F threaded screws are used in heavy gauge sheet metal, aluminum, zinc and lead die castings, cast iron, brass and plastic. In stainless steel, material into which the screw is to cut threads should have a lower hardness by 10-20 Rockwell hardness. Flat head screws are used when protrusion of the fastener above the mating surface is unacceptable. Typically 100 degree flat or for fastening softer materials, 82 degrees flat.

12X1/2 Phillips Pan Self Tapping Screw Type A Fully Threaded Zinc Bake. Type A thread for self starting in thin (.015 - .050 inch thick) metal or resin-filled plywood. Pan head screws are a common style that can substituted in most applications for round, truss or binding heads.

8X1 1/2 Phillips Round Washer Self Tapping Screw Type A Fully Threaded Zinc Bake. Round head screws are sometimes perferred over a pan head for its smooth surface and appearance.

4X3/8 #3 HD Phillips Truss 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. 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.

8X3/4 Phillips Round Washer Head Self Drilling Screw Full Thread Zinc Bake. Self drilling screws have point to cut through material and eleiminate the need to drill a pilot hole. Round head screws are sometimes perferred over a pan head for its smooth surface and appearance.