PEM® SNAP-TOP® SSS™ standoffs are self-clinching fasteners designed for permanent installation into ductile metal panels or PCBs, using spring action to secure boards while allowing quick removal without screws. The SSS-156-20ZI variant is made of carbon steel with a zinc plating per ASTM B633, SC1 (5µm), Type III, colorless, plus clear chromate. It has a 0.250 inch mounting hole diameter and a length of 0.625 inches (32nds code 20). Installation requires a pressed fit into a hole with a hardness range of HRB 60 / HB 107, with maximum pushout force of 200 lbs and minimum first-off snap force of 6 lbs. The part is identifiable by the registered PEM® dimple trademark.
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.
| PennEngineering® | bisco industries | |
|---|---|---|
| Product Category | Posts, Spacers, and Standoffs | Posts, Spacers, and Standoffs |
| Product Number | SSS-156-20ZI | SSS-156-20ZI |
| Product Name | SNAP-TOP Standoffs - Types SSA, SSC, SSS - Unified | Steel Standoffs |
| Type & Shape | Standoff; Round | Standoff |
