clinch bolt

clinch bolt, clench bolt

A bolt with one end designed to be bent over, to prevent withdrawal.
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PEM (Danboro, PA) spinning clinch bolts for use in thin metal sheets introduce 1-piece captive screw solutions whose controlled clinching action during installation permanently captivates the screw while allowing it to spin freely in the sheet.
The PEM spinning clinch bolts for thin metal panels have a self-retracting feature enabling the fastener's captive screw to remain retracted when disengaged.