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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 .039 in

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

 N/A .276 in

Panel 2 (Top) Thickness Range

 N/A .040 to .047 in

Panel 2 (Top) Mounting Hole A1 Nom.

 N/A .089 in

Panel 2 (Top) Mounting Hole A2 ± .003

 N/A .177 in

Panel 2 (Top) Mounting Hole A3 ± .003

 N/A .276 in

Panel 2 (Top) Mounting Hole A4 Min.

 N/A .217 in a1326.jpg
Panel 1 (Bottom) Sheet Hardness Max.1 N/A HRB 80 / HB 150

Panel 2 (Top) Material

 N/A Any

A Max.

 N/A .039 in SKS-R_Dimension.PNG

B ± .003

 N/A .256 in

C Max.

 N/A .275 in

D Anvil Hole + .003 - .000

 N/A .262 in

H Nom.

 N/A .307 in

M Max.

 N/A .167 in

N ± .003

 N/A .157 in

S ± .003

 N/A .127 in

Panel 1 (Bottom) Edge Distance C1 Min.

 N/A .236 in SKS-R_Panel.PNG

Panel 1 (Bottom) Location Tolerance Max.

 N/A ±.005 in

Panel 2 (Top) Edge Distance C2 Min.

 N/A .240 in

Standard Material

 N/A Hardened Steel
Standard Finish2 N/A Zinc Plated per ASTM B633, SC1 (5um) Type III, Colorless

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.