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The NSI INDUSTRIES jtsf21 is a flat head Phillips tapping screw designed for secure fastening in metal, wood, and composite substrates. The flat head profile sits flush with the surface for a clean, low-profile finish. Constructed from steel with a zinc chromate coating, these screws resist corrosion in typical installation environments. Each screw measures size 8 by 1 inch and is sold in a 100-piece pack, making this a practical choice for electricians, HVAC technicians, and general trade contractors who need reliable fasteners on the job.
These tapping screws are suited for light commercial and residential applications where a flush-mount fastener is required. Common uses include securing electrical enclosures, junction box covers, sheet metal panels, HVAC duct components, and other trade hardware. The self-tapping design eliminates the need for a pre-tapped hole in thinner gauge materials, speeding up installation in the field. The 100-piece pack quantity supports production-level work without frequent restocking.
Designed as a standard size 8 x 1 inch flat head Phillips tapping screw suitable for use with sheet metal, electrical enclosures, and similar light-gauge trade applications.
Installation is performed with a Phillips head screwdriver or a powered driver set to the appropriate clutch setting to avoid overdriving. Power down any electrical enclosure or panel before fastening hardware to energized equipment. Follow applicable NEC guidelines when securing electrical enclosures or covers. Do not overtighten, as zinc chromate coated steel screws in thin sheet metal can strip the material if excess torque is applied.
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