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Self-Clinching Captive Panel Screws
PEM® PFC4™ self-clinching captive panel screws from PennEngineering®
install permanently into stainless steel enclosures to enable easy access
whenever necessary and eliminate risks associated with loose screws. The
captivated screw remains reliably in place where designed in a door or panel and will not loosen, fall out, or damage internal components. Expanding
their application potential, these spring-loaded fastener assemblies comply
with UL 60950 equipment access standards.
PFC4 captive panel screws will install successfully in stainless sheets as thin
as .060 in. /1.53 mm with hardness up to HRB 88. A shoulder provides a
positive stop during installation and the fastener ultimately will be flush on
the opposite side of the sheet for a clean and unmarred appearance. A fully
recessed head in the fastened position allows for tool-only access.
The fasteners are manufactured from 400 Series stainless steel providing
corrosion resistance comparable to zinc-plated steel. They are available in
assorted screw lengths and in thread sizes #4-40 through #10-32 and M3
through M5. All PFC4 fasteners are RoHS compliant.
Among options, designers can specify MAThread® anti cross-thread technology as a safeguard to correct off-angle thread mating and promote proper
alignment during installation. A Torx® recess offers an alternative to the
standard Phillips drive.