Hi-Tech Fasteners Inc.
Hi-Tech Fasteners, Inc.
4940 Winchester Boulevard
Frederick, Maryland 21703-7400

Toll Free: 800.466.1940
Tel: 301.831.1277
Fax: 301.831.8296
Email: sales@hitechfasteners.com
Website: www.hitechfasteners.com
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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.

SK4™ standoffs can be used for spacing or mounting of replaceable components. Typically, several standoffs are used with one standard PEM® threaded standoff which accepts a screw to secure the board or component against any unwanted movement.
  • Allow detachable spacing of two sheets
  • Clinch feature mounts fastener permanently and flush into metal sheet
  • Unique barrel design allows for quick attachment and detachment Makes horizontal or vertical component mounting possible
  • SK4™ standoffs are now available for installation into stainless steel sheets
Unit of Measure

Specifications

Panel 1 (Bottom) Sheet Thickness Min.

 N/A 1.02 mm

Panel 1 (Bottom) Mounting Hole B + 0.08

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

Panel 2 (Top) Mounting Hole A1 Nom.

 N/A 1.5 mm

Panel 2 (Top) Mounting Hole A2 ± 0.08

 N/A 3 mm

Panel 2 (Top) Mounting Hole A3 ± 0.08

 N/A 5 mm

Panel 2 (Top) Mounting Hole A4 Min.

 N/A 3.75 mm a1326_1.jpg
Panel 1 (Bottom) Sheet Hardness Max.2 N/A HRB 88 / HB 183

Panel 2 (Top) Material

 N/A Any

A ± 0.08

 N/A 2.51 mm a1323_1.jpg

B ± 0.08

 N/A 4.5 mm

C Max.

 N/A 5.39 mm

D Anvil Hole + 0.08

 N/A 5.39 mm

H Nom.

 N/A 6.35 mm
L - Length ± 0.133 N/A 6 mm

M Max.

 N/A 2.75 mm

S ± 0.08

 N/A 1.72 mm

Panel 1 (Bottom) Edge Distance C1 Min.

 N/A 6.60 mm a1324_1.jpg

Panel 1 (Bottom) Location Tolerance Max.

 N/A ±.130 in

Panel 2 (Top) Edge Distance C2 Min.

 N/A 4.1 mm

Standard Material

 N/A 400 Series Stainless Steel

Standard Finish

 N/A Passivated and/or tested per ASTM A380

CAD Supplier

 N/A PennEngineering® (PEM®)
  • 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”