Square Neck bolts

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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Special Cold Formed Screws & Bolts

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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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