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SKU:88730991
The steel thread cutting screw has a zinc plating, a Type F point style, and a pan head with a Phillips drive. The type F point is suitable for heavy gauge sheet metal, aluminum, cast iron, brass, and plastic. The screw has machine screw threads that taper down to a blunt point with multiple cutting edges and chip cavities. Steel is often used in applications where strength is the primary consideration. The zinc plating offers corrosion resistance and has a reflective appearance. The pan head has a flat top and short vertical sides with a rounded top edge. The Phillips drive has an x-shaped slot that accepts a Phillips driver and is designed to allow the driver to slip out of the head to help prevent over-tightening and damage to the thread or fastener.Thread cutting and thread rolling screws, two types of self-tapping screws, are threaded fasteners that create a mating thread in the wall of a hole. The two screws differ from each other in the way that they create the threads. Thread cutting screws cut the wall of the hole to create the thread, creating material chips that need to be cleared away from the hole to prevent clogging. Thread rolling screws, also called thread forming screws, do not remove material but instead press against the wall of the hole to displace the material and form the threads.
Thread cutting screw with type F point has machine screw threads that taper down to a blunt edge and is suitable for heavy gauge sheet metal, aluminum, cast iron, brass, and plastic
Steel is often used in applications where strength is the primary consideration
Zinc plating resists corrosion and has a reflective appearance
Pan head has a flat top and short vertical sides with a rounded top edge
Phillips drive has an x-shaped slot that accepts a Phillips driver and is designed to prevent over-tightening
These are a nice, faster alternative to drilling and tapping. They were initially purchased to replace stripped #6 or #8 sheet metal screws during a major appliance repair (clothes dryer) and the #10 or #12 self-threading size works great. They create machine threads that make the next breakdown/reassembly much easier. Conversely, factory sheetmetal screws frequently cut new threads across the original ones and stripout in sheetmetal.The attached photo is a new stove fan hood where these screws were used in a square metal tube used to span two studs, and also in a 1/8" aluminum mounting plate. I simply drilled 3/16" (5mm) holes and the screws tapped the holes when I drove them in with an impact driver. On sheet metal and thinner aluminum, I drill a 5/32" (4mm) pilot hole.These are made in Taiwan, not communist China, so the higher quality is apparent in the finish and hardness. They appear to be fairly hard steel with a uniform zinc coating. I removed a couple to reposition the hood and the screws looked like new with no thread damage. Unlike many Chinese screws, these can be reused after they're removed.A great screw for a good price!
