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Hexagon Slotted And Castle Nuts GB 9457 – 1988
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Type A Wing Nuts ASME B 18.6.9 – 2010 (R2017)
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Hexagon Thick Nuts GB 56-1988
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Welding square nuts GB/T 13680-1992
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Acorn Hexagon Nuts GB /T 923 – 2009
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Type 2 Hexagon Flange Nut GB/T 6177.1-2016
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Carbon Steel Black DIN934 Hex Nut
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UNC/ASME B18.2.2 ASTM A563 Hex Nut