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Amazon.com: 1/4"-20 (30 pcs) K-Lock Nuts with External Tooth Lock Washer, 304 Stainless Steel 18-8, Kep Lock Nuts Locknut : Industrial & Scientific
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Au-Ve-Co Products - 1/2-20, 3/4″ Width Across Flats Washer Lock Nut - 51259372 - MSC Industrial Supply
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