Self Tapping Screws - Bulk Ordering and Packaging

Self Tapping screws - or Sheet metal screws, abbreviated as SMS, are case hardened screws able to form or cut their own threads. Typically used in thin gauge sheet metal, some designs work well in softer materials such as wood and some plastics. We stock quality imported sheet metal screws from Taiwan. Our vendors use the highest quality steel and a computer controlled heat treating process. Competitors may offer low ball pricing from other parts of the world. Uneeda stocks a full range of point types, head styles, drives and finishes for immediate delivery.

TYPE F: A thread cutting screw with machine screw thread containing a blunt tapered point, having multi-cutting edges and chip cavities. Used for thicker gauge sheet metal, aluminum, zinc, die castings, cast irons, brass, and plastic.	TYPE A: A thread forming screw which has wider spaced threads for self-starting in thin metal or resin-filled plywood. Used with drilled or punched holes in sheet metal. May also be used in wood and plastics.	TYPE B: A blunt thread forming screw for use with thin gauge material.
TYPE AB: A thread forming screw combining locating point of Type A with thread size and pitch of Type B. Have more threads per inch and are more effective in brittle materials than type A.	SELF-DRILLING (TEK): Made for thin gauge sheet, metal steel, aluminum, etc. Cannot be used in wood or plastic. This is the only item not needing a pilot hole.	TYPE 23: Machine screw thread possessing a groove shaped tip that is used as both cutting edge, and place for metal chips to accumulate to reduce torque and binding.
TYPE 25: Thread cutting screw with SMS B threads, but possessing a groove shaped tip that is used as both cutting edge, and place for metal chips to accumulate to reduce torque and binding.	THREAD ROLLING: Screw with machine type trilobular thread which “Rolls” the thread which eliminates debris and metal chips. Commonly used in Electronic and Electrical applications.