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Hillman 5/16-in x 5-1/2-in Zinc-Plated Hex-Head Interior Lag Screws in the Lag Screws department at Lowes.com
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drilling - What size pilot hole should I drill for for a specific size of screw? - Woodworking Stack Exchange
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Amazon.com: uxcell Hex Lag Screws 5/16" x 2" Carbon Steel Phillips Head Half Thread Self-Tapping Bolts for Deck Building or Joining Lumber 10pcs : Industrial & Scientific
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34820 - 5/16" x 3/4" 3-Flute Flat Bottom Counterbore with TiN coated twist drill - Make it Snappy Tools
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