Best Threaded Insert for ABS Plastic

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Old 10-14-13, 10:27 AM
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Best Threaded Insert for ABS Plastic

I'm looking for the best low-volume and cost effective threaded inserts to install into ABS plastic. I'm going into production with a product, so low volume would mean ~100-200 inserts per day.

I am currently using press-fit inserts, but they are a real pain to install by hand (usually I have to apply heat to fully install them).

I'm also considering using EZ-loc self-tapping inserts. Does anyone have experience using these in plastic -- does it work? EZ-loc only advertises them for wood, which is why I'm not sure.

One other option would be to use thermoplastic inserts. I'm not really sure about these though -- can they simply be installed with a soldering iron?

Any help is greatly appreciated.

Thanks,

Austin
 
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Old 10-14-13, 11:48 AM
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Inserts

What size inserts are we talking about?
 
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Old 10-14-13, 03:03 PM
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Inserts

Pretty small. Here's a link to the press-fit inserts I'm currently using:

Item No: EZ-600 [Head-Type Press Insert]
 
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Old 10-15-13, 12:31 AM
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It looks like the EZ Locs would work in plastic. May require a drop of Locktite though.
The smallest size I've seen available is 4-40.

The ones you are using is the best insert for what you're doing.

All American Products - E-LOK THREAD INSERTS
 
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Old 10-15-13, 10:10 AM
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Insert

Ok. Do you think it's ok to pinch the tabs/fins together (1) to make inserting the insert manually easier and (2) to minimize the amount of heat I need to apply to the insert. My thought process there is the more I can press the insert in by hand and less by using a soldering iron, less melted plastic will accumulate around the insert (in the hole and near the head of the insert).
 
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Old 10-15-13, 10:42 PM
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You should be able to pinch the tabs together slightly for easier insertion. You just need to make sure the screw you are using is long enough to re-open those tabs.
 
 

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