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Gibraltar - 5/8" Bolt, 2" Square, Black Oxide Finish, Steel Square Flat Washer - 73249658 - MSC Industrial Supply
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18-8 Stainless Steel Hex Nut, Black Oxide Finish, DIN 934, Metric, M4-0.7 Thread Size, 7 mm Width Across Flats, 3.2 mm Thick (Pack of 100): Amazon.com: Industrial & Scientific
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Common Sense Fasteners, Turn Button Set, Black Oxide Finish (Government Black) 10 Piece: Amazon.com: Industrial & Scientific
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5 YKK Metal Zipper Closed End Black Oxide Finish- 57 Colors - 17 Lengths Available | Decorative Trimmings LLC
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