#12 x 5 Phillips Flat Self Drilling Screw Full Thread Zinc Bake - Pkg of 500

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.

#10-16 x 1-7/16 in. Phillips Flat-Head Screws With Wings provide secure metal-to-metal fastening with strong holding power. The screws feature sharp points and can be used where a flush appearance is needed. Features: Ideal for attaching plywood to metal from 20-12-gauge Steel construction Sharp self-piercing points are ideal for fastening corrugated roofing panels to wood structures Wings eliminate need to countersink wood Flat-head for flush appearance

6X1/2 Phillips Flat Undercut Full Thread Self Drilling Screw Zinc Bake. Self drilling screws have point to cut through material and eleiminate the need to drill a pilot hole. Flat undercut heads are used when a flat head is desired on shorter length screws.

10X1 1/4 Square Drive Pan 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. Pan head screws are a common style that can substituted in most applications for round, truss or binding heads.

8X3/4 Phillips Modified Truss Head Full Thread Self Drilling Screw Black Phos. Self drilling screws have point to cut through material and eleiminate the need to drill a pilot hole. 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.