Commonly found on cup bolts; also can be seen on raised countersunk (plow bolts/earth-moving) and hexagon (pump bolts). The square is used to retain the head while the mating nut is tightened.
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Square Neck Commonly found on cup bolts; also can be seen on raised countersunk (plow bolts/earth- |
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ypeOTHER SCREWSMaterial10B21,40CrSurface finishZinc Plated, BlackeningHeat TreatmentHeat treatment with the material, and heat treatment with the productManufactruing ProcessWire Drawing, Cold Heading, Heat Treatment, Thread Rolling, Surface Plating, PackingLead Time10-30days, ...
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The bolt application mainly was for machinery, construction, petroleum and industry and so on. Under only high-quality products can win customers’ praise philosophy, always put the good quality in the first point. ...
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