What Are Your Screws Called?

The Round Washer Head design, which can also beidentified as wafer head screws, K-Lathe screws and modified truss screws, could quite possibly be the most multipurpose head design offered. It combines the benefits of the Pan Head design but has an attached washer built on to the head to increase head diameter.  This helps prevent overdriving in softwoods. General cabinet assembly, installation, hinges, metal drawer slides, wooden drawer guides, attaching lights and brackets are just a few applications where the Round Washer Head design is used. The addition of the washer provides maximum bearing surface to allow for "overdriving" the screw to tighten those stubborn joints easily. These Fasteners are also self tapping screws in that they tap their own mating threads and do not need pre threaded inserts like machine screws. It was originally designed for the construction industry to attach wood lathe and metal framing to 20 to 25 gauge steel studs  They also can be known as  plymetal because they can be used to attach plywood to metal. Thebig wafer head sinks into the plywood and has a large bearing surface. The length is measured from the top of the head. They are available in Philips drive  as well as square drive, which is At times referred to as Robertson drive.  They are available in stainless and well as carbon steel and with plain or painted heads. Also known as: Round Washer Head Needlepoint (zip screws) or Self-drilling (Tek Type) Screws Wafer Head Needlepoint (zip screws) or Self-drilling (Tek Type) Screws K-Lathe Screws Modified Truss Needlepoints (zip type) or Self-Drilling (Tek Type) Screws Sharp point - zip screws - or self drilling - tek type - screws, these screws are also self-tapping screws as they tap their own threads in to the materials they are used with and do not need to be used with a pre-threaded mate such as a nut or insert.