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Q 174B Cross recessed hexagonal head bolt
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Grade C Full Thread Hexagon Head Bolt GB/T 5781-2016
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Hexagonal head tapping screw
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Cross recessed countersunk head self tapping screws GB/T 846-2017
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Hexagon flange bolt
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Slotted round head tapping screws GB /T 5282 – 2017
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Self tapping screw DIN7971-1990
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cylindrical pin
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expansion bolt