Patented PEM(R) spinning clinch bolts forthin metal panels have been introduced with a self-retracting feature enablingthe fastener's captive screw to remain retracted when disengaged. During fastener installation, controlledclinching action permanently captivates the retractable screw-and-springcombination in the metal sheet and allows the screw to spin freely for quickattachment of mating hardware. These fasteners can replace loose hardware andserve as practical and economical alternatives to multi-component captive screwassemblies.

PEM Type SCBR(TM) spinning clinch boltscan permanently captivate into aluminum or steel sheets as thin as .040 inch/1.02mm (and greater) and can be specified for close centerline-to-edgeapplications.

Installation is achieved by simplypressing the fastener into a properly sized mounting hole and then applyingsqueezing force on the top of the screw head and the underside of the sheetmaterial. The squeezing action forces the displacer of the screw into thesheet, causing it to reduce the mounting-hole diameter and captivate the screw.

PEMspinning clinch bolts with the self-retracting feature are available in variouslengths and thread sizes from #4-40 through #8-32 and M3 through M4.

PennEngineering's PEM Spinning Clinch Bolts with Captive Screw_A