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All Categories > PEM® Brand Fasteners for Metal Sheets and Panels > Standoffs for Sheet Metal > SNAP-TOP® Standoffs – Types SSA, SSC, SSS > SNAP-TOP® Standoffs - Types SSA, SSC, SSS - Metric > Part # SSS-4mm-12ZI  

Part # SSS-4mm-12ZI, SNAP-TOP® Standoffs - Types SSA, SSC, SSS - Metric

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PEM SNAP-TOP® Standoffs (Types SSA, SSS, SSC) are designed for permanent installation into metal panels or PC boards.

These all-metal standoffs use a spring action to hold PC boards and subassemblies securely, while allowing for quick removal. Screws and other threaded hardware are eliminated. This means less parts to handle during assembly and less risk of damaging delicate circuitry because of loose parts falling into your equipment.

These standoffs are permanently installed in the panel by squeezing them into a properly sized hole using any standard press.




 Specifications   

Panel 1 (Bottom) Thickness Min.
1 mm

Panel 1 (Bottom) Mounting Hole B + 0.08
5.41 mm

Panel 2 (Top) Thickness Range
1.00 to 1.80 mm

Panel 2 (Top) Mounting Hole A +0.081
4.00 mm

Panel 1 (Bottom) Hardness Max.2
HRB 60 / HB 107

Panel 2 (Top) Hardness Max.
No limit

Panel 1 Material3
Metal

Panel 2 (Top) Material
PC Board or Metal

L - Length ± 0.13

 View
12 mm

B ± 0.13
4.78 mm

C Max.
5.39 mm

H ± 0.13
6.35 mm

P ± 0.13
3.58 mm

Panel 1 (Bottom) Edge Distance C1 Min.
6.60 mm

Panel 2 (Top) Edge Distance C2 Min.
2.54 mm

Standard Material
Carbon Steel

Standard Finish
Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless

Anvil Hole Diameter
5.49 - 5.56

CAD Supplier
PennEngineering® (PEM®)
1 Available for thicker boards on special order.
2 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.
3 Type SSA standoffs can be installed into cold-rolled steel provided hardness is less than HRB 50. HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.


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·  SNAP-TOP® Standoffs 2



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