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The STEWART FASTENER J2728 is a 1/4-inch by 3-1/4-inch hex head penetrator concrete screw designed for direct fastening into concrete, masonry, and similar hard substrates. This screw type is a standard choice for securing brackets, straps, conduit supports, equipment pads, and structural components to concrete surfaces. The hex head drive style allows for fast installation with a standard nut driver or hex-head bit, reducing install time on repetitive fastening tasks. Sold individually, with 100 screws packed per jar for job-site organization and easy counting.
This fastener is suited for use in residential and light commercial applications where concrete anchoring is required. Typical install scenarios include securing HVAC equipment bases, plumbing hangers, electrical conduit straps, and support brackets directly to poured concrete or block walls. The penetrator thread design cuts directly into the base material without requiring a separate anchor insert, making it a one-step fastening solution for trade professionals working in concrete environments.
Designed as a direct concrete fastening screw for use in standard 1/4-inch pre-drilled concrete or masonry pilot holes in residential and light commercial construction and mechanical applications.
Installation is typically performed by HVAC technicians, plumbers, electricians, or general contractors requiring concrete fastening. Always pre-drill a correctly sized pilot hole in the concrete substrate per the fastener manufacturer and applicable local building code requirements. Ensure the substrate is free of debris before driving the screw. Do not overdrive, as stripping the thread engagement in concrete will compromise holding strength.
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