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Screw for plastic with canted shaft, what is it called?

jscpm

Titanium
Joined
May 4, 2010
Location
Cambridge, MA
I am trying to replace some rusted out security screws that are designed to go into a plastic housing. The screws are about 12 TPI #10, but the shaft is canted. The profile of the screw looks something like this:

security_screw.jpg

Any idea what this type of screw is called? I think they are oem'ed by Bosch because the sensor in the housing is made by them.
 
Some additional research revealed that the screw is called a "Delta PT" screw.

Nothing worse than these obscure fasteners that are impractical to duplicate locally.
 
Some additional research revealed that the screw is called a "Delta PT" screw.

Nothing worse than these obscure fasteners that are impractical to duplicate locally.

Its not because fastener engineers dreamed of an obscure thread to make life miserable for people like yourself. Plastics, both thermoplastic and thermoset, have different needs than machine screws. Threads have been developed to address these needs, mainly retention and minimizing local stresses. Normally, these screws are driven into unthreaded holes.

Tom
 








 
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