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The HILLMAN 560358 is a hex washer head self-drilling sheet metal screw designed to drill, tap, and fasten in a single operation. The self-drilling point eliminates the need for a pilot hole, reducing labor time on the job. Sharp threads cut their own mating thread as the screw advances into the material, creating a secure mechanical connection. The zinc finish provides basic corrosion resistance for general-purpose applications. Each box contains 100 screws at a size of 12-14 x 1 inch. This fastener is well-suited for sheet metal assembly, HVAC ductwork, metal framing, and light structural attachment tasks performed by trade professionals.
These self-drilling screws are commonly used in residential and commercial construction and mechanical applications where metal-to-metal or material-to-metal fastening is required. Typical installations include HVAC duct fabrication and attachment, metal stud framing, electrical enclosure assembly, and general sheet metal work. The hex washer head style allows for installation with a standard nut driver or hex-head bit, which is standard tooling for HVAC and sheet metal trades.
Designed for attaching sheet metal, wood, and similar materials to metal substrates in general construction and mechanical trade applications.
Self-drilling sheet metal screws are typically installed by HVAC technicians, sheet metal workers, electricians, and general contractors using a hex-head driver bit and a variable-speed drill or screw gun. No pilot hole is required, but the driving tool should be set to an appropriate clutch torque to avoid overdriving and stripping the fastener head. Follow applicable local building codes and manufacturer system guidelines when using fasteners in structural or pressure-containing assemblies. Wear appropriate eye protection when driving self-drilling fasteners into metal.
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