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PEM® KEYHOLE® Standoffs and 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. These standoffs and fasteners can save valuable time and dramatically reduce the amount of loose hardware required.

Type SKS-R™ fasteners are designed so that two sheets can be quickly joined flat against each other. Typically, several fasteners are used with one standard PEM® threaded F™ flush nut which accepts a screw to secure the sheets against any unwanted movement.
  • Allow detachable spacing of two sheets
  • Clinch feature mounts fastener permanently and flush or sub-flush into metal sheet
  • Unique barrel design allows for quick “panel-on-panel” attachment and detachment
  • Can be clinched into blind hole where concealed head is required
  • Makes horizontal or vertical component mounting possible
  • SKS-R™ fasteners are designed to provide high side-load in verticle component mounting applications
  • SKS-R™ fasteners are available for various top sheet thicknesses and hole sizes
Unit of Measure

Panel 1 (Bottom) Sheet Thickness Min.

 N/A .047 in

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

 N/A .237 in

Panel 2 (Top) Thickness Range

 N/A .040 to .047 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 .047 in SKS-R_Dimension.PNG

B ± .003

 N/A .177 in

C Max.

 N/A .236 in

D Anvil Hole + .003 - .000

 N/A .183 in

H Nom.

 N/A .276 in

M Max.

 N/A .198 in

N ± .003

 N/A .099 in

S ± .003

 N/A .155 in

Panel 1 (Bottom) Edge Distance C1 Min.

 N/A .276 in SKS-R_Panel.PNG

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 Finish2 N/A Passivated and/or tested per ASTM A380

CAD Supplier

 N/A PennEngineering® (PEM®)
  • 1 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.
  • 2 See PEM Technical Support section of our web site for related plating standards and specifications.