12-24X1/2 Phillips Flat Undercut Thread Cutting Screw Type F Fully Threaded Zinc, Pkg of 8000

5/16-18X1 1/4 Six Lobe Pan Thread Cutting Screw Type 23 Fully Threaded Zinc Bake. 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. Pan head screws are a common style that can substituted in most applications for round, truss or binding heads.

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.

1/4-20X3/4 Six Lobe Flat Floor Board Screw Type F Black Phosphate. 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.

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.

12X4 Phillips Flat 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. 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.