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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 - Unified > Part # SSA-156-20  

Part # SSA-156-20, SNAP-TOP® Standoffs - Types SSA, SSC, SSS - Unified

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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.
.040 in

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

Panel 2 (Top) Thickness Range1
.040 to .070 in

Panel 2 (Top) Mounting Hole A +.003 -.000
.156 in

Panel 1 (Bottom) Hardness Max.2
HRB 50 / HB 82

Panel 2 (Top) Hardness Max.
No limit

Panel 1 Material3
Metal

Panel 2 (Top) Material
PC Board or Metal

L - Length ± .005

 View
.625 in

B ± .005
.188 in

C Max.
.212 in

H ± .005
.250 in

P ± .005
.141 in

Panel 1 (Bottom) Edge Distance C1 Min.
.260 in

Panel 1 (Bottom) Location Tolerance Max.
±.005 in

Panel 2 (Top) Edge Distance C2 Min.
.100 in

Standard Material
Aluminum

Standard Finish
Plain

Anvil Hole Diameter
.216 - .219

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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PEM Bulletin SSA

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