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The DEWALT DW5424B25 is a Rock Carbide SDS Plus masonry drill bit sold in a 25-pack, designed for hammer drilling into concrete, block, brick, and other masonry substrates. The bit measures 5/16 inches in diameter with a 4-inch usable length and 6-inch overall length. It features a serrated titanium carbide tip engineered for extended drilling life and a pilot point geometry that initiates cutting on contact for improved hole placement accuracy. Licensed HVAC, plumbing, and electrical contractors reaching for anchor installations in masonry will find the redesigned flute geometry clears debris efficiently, reducing heat buildup and keeping drilling speed consistent through the full bore depth.
This bit is suited for residential and light commercial applications where sleeve anchors, wedge anchors, or drop-in anchors must be set into poured concrete, CMU block, or brick. The SDS Plus shank fits rotary hammer tools equipped with a standard SDS Plus chuck. The 25-pack quantity makes it a practical supply for crews running multiple anchor installations in a single project phase, such as equipment pad mounting, conduit strapping, and pipe hanger installation in concrete ceilings or walls.
Designed for use with SDS Plus rotary hammer drills. The SDS Plus shank is not compatible with SDS Max or spline-drive chucks. Sized for 5/16-inch diameter anchor installations per the bit dimensions stated in the product data.
Installation should be performed by qualified tradespeople following applicable codes, including IBC and manufacturer anchor specifications for embedment depth and edge distance. Wear appropriate PPE including eye protection and a dust mask or respirator when drilling masonry. Ensure the rotary hammer is set to hammer-drill mode and that the SDS Plus bit is fully seated and locked in the chuck before starting. Allow the bit to cool periodically during extended use to preserve tip life.
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