Maryland Metrics Thread Data Charts: British Thread - Coarse Pitch - BSW | PDF | Cutting Tools | Tools
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Ochoos 1/4-20 inch UNC BSW Thread Steel Bolt 1/2-4 inch Length Screw Pitch 304 Stainless Steel Mushroom Head Square Neck Bolts - (Length: 1 inch 50pcs) : Amazon.ca: Tools & Home Improvement
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