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PEM® KEYHOLE® Standoffs 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 can be used for spacing or hanging of replaceable components. Typically, several SKC standoffs are used with one standard PEM threaded standoff which accepts a screw to secure the board ormore
Unit of Measure

Panel 1 (Bottom) Sheet Thickness Min.

 1.02 mm

Panel 1 (Bottom) Mounting Hole B + 0.08

 5.41 mm
Panel 2 (Top) Thickness Range1 1.45 to 1.62 mm

Panel 2 (Top) Mounting Hole A1 Nom.

 1.5 mm

Panel 2 (Top) Mounting Hole A2 ± 0.08

 3 mm

Panel 2 (Top) Mounting Hole A3 ± 0.08

 5 mm

Panel 2 (Top) Mounting Hole A4 Min.

 3.75 mm
a1326_1.jpg
Panel 1 (Bottom) Sheet Hardness Max.2 HRB 70 / HB 125

Panel 2 (Top) Material

 Any

A ± 0.08

 2.51 mm
a1323_1.jpg

B ± 0.08

 4.5 mm

C Max.

 5.39 mm

D Anvil Hole + 0.08

 5.39 mm

H Nom.

 6.35 mm
L - Length ± 0.133 25 mm

M Max.

 2.75 mm

S ± 0.08

 1.72 mm

Panel 1 (Bottom) Edge Distance C1 Min.

 6.60 mm
a1324_1.jpg

Panel 1 (Bottom) Location Tolerance Max.

 ±.130 in

Panel 2 (Top) Edge Distance C2 Min.

 4.1 mm

Standard Material

 300 Series Stainless Steel

Standard Finish

 Passivated and/or tested per ASTM A380

CAD Supplier

 PennEngineering® (PEM®)

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  • 1 Fastener will provide flush application at minimum sheet thickness.
  • 2 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.
  • 3 The “L” dimension is the height of the installed stud at max grip. The height of the stud will increase if it is installed into thinner material. To calculate “actual L” use this formula: max grip - actual grip + L = “actual L”