Through this teardown process, 19 pieces M2.5 screws and 7 pieces (aluminum alloy) M2.5 standoffs with metric profile thread were used for the assembly of the device. Additionally, eight integrated M2.5 internally threaded tapped holes and four extruded threaded holes are used in certain parts for fastening purposes. PennEngineering can make the device more competitive by employing both standard solutions and solutions uniquely modified for this keyboard.
PEM® TackScrew™ fasteners, PEM® TackSert™ pins and PEM® TackPin® fasteners provide excellent solutions replacing regular screws with a decreased installation cost. All three options are pressed into a hole axially and will not loosen through vibration over time unlike a regular screw.
Below are certain alternatives featuring several PEM® fasteners that can help achieve better functionality and cost savings:
Alternative PEM® Solutions:
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The base panel material should be metal. The panel can be as hard as HRB 88 or less and as thin as 0.91mm.
They can be removed in the same way as a screw but only once; After the first removal they can be re-inserted just once again.
This allows for a one-time repair, rework or maintenance.
The base panel can be metal, die-cast or plastic. The parts are not intended to be removed.
The base panel has to be of metal material. The panel to be clinched on can be as hard as HRB 88 or less and at least 0.89mm of thickness.
They are not intended to be reinstalled/ replaced.
| PEM® Retained Correlated Magnet (RCM) |
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The magnet shown in slides 13-15 can be replaced with a clinched magnet. This eliminates the need for
adhesive tapes providing a much stronger, more durable and longer lasting hold. It also places the magnet coplanar
to the surface for better attraction properties. The magnet can be a standard magnet or even correlated magnetic product.
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