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SK4-F™ 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 (PEM® Bulletin F) 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
  • SK4-F™ fasteners are now available for installation into stainless steel sheets
Unit of Measure

Panel 1 (Bottom) Sheet Thickness Min.

N/A 1.00 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 70 / HB 125

Panel 2 (Top) Material

N/A Any

A Max.

N/A 1 mm a1327_1.jpg

B ± 0.08

N/A 4.5 mm

C Max.

N/A 5.39 mm

D Anvil Hole + 0.08

N/A 4.67 mm

H Nom.

N/A 6.02 mm

M Max.

N/A 2.75 mm

N ± 0.08

N/A 2.50 mm

S ± 0.08

N/A 1.72 mm

Panel 1 (Bottom) Edge Distance C1 Min.

N/A 3.80 mm a1325_1.jpg

Panel 1 (Bottom) Location Tolerance Max.

N/A ±.130 in

Panel 2 (Top) Edge Distance C2 Min.

N/A 4.10 mm

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 Fastener will provide flush application at minimum sheet thickness.
  • 2 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.