
Protocase manufactures fully finished custom electronic enclosures and associated parts from a wide variety of materials and components, in 2-3 days with no minimum order. Protocase also provides expert and affordable enclosure design services.
CNC Milling
Self-Clinching Fasteners

Self-Clinching fasteners (commonly known as PEM® brand self-clinching fasteners, which is a trademark of PennEngineering & Manufacturing Corp) are threaded nuts, studs, or standoffs that are mechanically pressed into metal to provide solid fastening points. Machined parts generally use blind-hole PEM® brand self-clinching fasteners (whereas sheet metal is generally used with through-hole PEM® brand self-clinching fasteners).
Inserting PEM® brand self-clinching fasteners into blind holes has the extra benefit of a smooth finish on the opposite sides of sheet metal after the fastener is installed. These PEMS® can be used in sheet metal as thin as 0.075" (1.90mm).
Protocase stocks the following PEM® brand self-clinching fasteners for blind milled holes:
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Concealed fasteners for blind features are ideal when:
- • Outside surface finish is important
- • Metal is too thick for other stocked PEM® brand self-clinching fasteners
- • Where protecting from air, liquid, or dust is extremely important