Experts in the development and manufacture of precision fasteners,
components and systems, specializing in thin sheet attachment solutions.

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PEM® KEYHOLE® sheet joining fasteners are designed so that a PC board or panel can be quickly slipped into place and then removed from an assembly by simply sliding the board sideways and lifting it off. PEM KEYHOLE fasteners can save valuable time and dramatically reduce the amount of loose hardware required. Type SKC-F is designed so that two sheets can be quickly joined flat against each other. Typically, several Type SKC-F fasteners are used with one standard PEM® threaded Type F flush nut which accepts a screw to secure the sheets against any unwanted movement.

Type SKC-F - Allows detachable joining of two sheets
  • Clinch feature mounts fastener permanently into metal sheet.
  • Unique barrel design allows for quick “panel-on-panel” attachment and detachment.
  • Head is flush or sub-flush with one side of metal sheet.
  • Can be clinched into blind hole where concealed-head is required.
  • Makes horizontal or vertical component mounting possible.
Unit of Measure

Panel 1 (Bottom) Sheet Thickness Min.

N/A .039 in

Panel 1 (Bottom) Mounting Hole B + .003 - .000

N/A .213 in

Panel 2 (Top) Thickness Range

N/A .057 to .064 in

Panel 2 (Top) Mounting Hole A1 Nom.

N/A .059 in

Panel 2 (Top) Mounting Hole A2 ± .003

N/A .118 in

Panel 2 (Top) Mounting Hole A3 ± .003

N/A .197 in

Panel 2 (Top) Mounting Hole A4 Min.

N/A .148 in a1326.jpg
Panel 1 (Bottom) Sheet Hardness Max.1 N/A HRB 70 / HB 125

Panel 2 (Top) Material

N/A Any

A Max.

N/A .039 in a1327.jpg

B ± .003

N/A .177 in

C Max.

N/A .212 in

D Anvil Hole + .003 - .000

N/A .184 in

H Nom.

N/A .237 in

M Max.

N/A .108 in

N ± .003

N/A .099 in

S ± .003

N/A .068 in

Panel 1 (Bottom) Edge Distance C1 Min.

N/A .150 in a1325.jpg

Panel 1 (Bottom) Location Tolerance Max.

N/A ±.005 in

Panel 2 (Top) Edge Distance C2 Min.

N/A .160 in

Standard Material

N/A 300 Series Stainless Steel

Standard Finish

N/A Passivated and/or tested per ASTM A380

CAD Supplier

N/A PennEngineering® (PEM®)
  • 1 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.

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