01 October 2009
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Permanent fix for metal sheets on PC boards

The latest PEM SpotFast fastener permanently joins metal sheets to PC boards or plastic panels and creates a flush-attachment connection without protrusions on either side

According to US manufacturer PennEngineering, these fasteners offer practical alternatives to riveting or adhesives and their rotational capability extends application potential with the fastener serving as a single flush-mounted pivot point.

Type SFK steel fasteners install flush with the top metal sheet and flush or sub-flush with the bottom panel. When used as a pivot point, the top metal sheet is captivated between the head of the fastener and the lower (non-rotating) panel. The fastener's design features two separate clinch and knurl joining profiles holds the key. Squeezing the fastener into place using punch and anvil causes a cold-flow of the metal sheet material into the fastener's clinch profile and a broaching fit of the knurled end into the PC board or plastic panel.

Paul Gay


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