Spinning Clinch Bolts have self-retracting feature.
September 29, 2010 -
Intended for metal panels as thin as .040 in., PEM® Type SCBR(TM) spinning clinch bolts incorporate self-retracting feature that enables integrated captive screw to remain retracted when disengaged. Controlled clinching action permanently captivates retractable screw-and-spring combination in metal sheet during fastener installation and lets screw spin freely, accelerating attachment of mating hardware. Various lengths and thread sizes are available.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
PennEngineering® (Penn Engineering)
P.O. Box 1000
Danboro, PA, 18916
USA
Patented Pem® Spinning Clinch Bolts with Captive Screw Introduced with Self-Retracting Feature
Patented PEM® spinning clinch bolts for thin metal panels have been introduced with a self-retracting feature enabling the fastener's captive screw to remain retracted when disengaged. During fastener installation, controlled clinching action permanently captivates the retractable screw-and-spring combination in the metal sheet and allows the screw to spin freely for quick attachment of mating hardware. These fasteners can replace loose hardware and serve as practical and economical alternatives to multi-component captive screw assemblies.
PEM Type SCBR(TM) spinning clinch bolts can permanently captivate into aluminum or steel sheets as thin as .040" / 1.02mm (and greater) and can be specified for close centerline-to-edge applications.
Installation is achieved by simply pressing the fastener into a properly sized mounting hole and then applying squeezing force on the top of the screw head and the underside of the sheet material. The squeezing action forces the displacer of the screw into the sheet, causing it to reduce the mounting-hole diameter and captivate the screw.
PEM spinning clinch bolts with the self-retracting feature are available in various lengths and thread sizes from #4-40 through #8-32 and M3 through M4.
Detailed specifications (Bulletin SCBR) and free part drawings (PEM CAD Library) for these RoHS-compliant fasteners can be accessed at www.pemnet.com
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