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Tapcon 1/4" x 2-3/4" Star Torx Head Concrete Anchor Screws 3189407V2 | 100 Pack | Drill Bit Included: Amazon.com: Industrial & Scientific
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Technical Data - Box of 100 ITW Buildex Spit Stainless Steel Tapcon 6x57mm 1/4"x2-1/4" Hex Head 3369907 SHW4-214 Concrete Anchor screw HWH-410SS
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Tapcon Screws Into Concrete | Which Size Bit To Use? Tapcon Anchoring Concrete Fastening Tip - YouTube
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