TORX Inset Measurement Technique

S

seedspreader

#1
We manufacture a plastic cap that has a 17 mm hex head and t20 torx inset that our customer's can use the t20 bit to install.

I've been here for 2.5 years and this is a fairly fresh product launch, but development and launch took place before I came here. It seems I have only one customer who uses the t20 (everyone else installs by hand or the 17mm socket).

I received a quality complaint on the fit of their bit into the torx inset. I can't seem to find the t20 tolerance band or a gauge (preferably go/no-go) that I can use to confirm tolerance.


Anyone deal with TORX heads/tolerances? What kind of gauging equipment (maybe it's all optical, but with the depth of inset being a factor, I wouldn't assume that) are you using?

So, my dilemma is that I have $30k of parts sitting overseas. They are made of nylon So there is some tool wear on the pin during injection that may contribute to smaller dimensions, but there is also tool wear to installation bits that may get smaller and smaller as they use them and then when they replace them they will be bigger, etc.

Any help appreciated.
 
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D

DRAMMAN

#2
You can always start by purchasing a few good quality T20 bits and using those a gauges. Obviously, not a true gauge. Try contacting the Industrial Fastener institute. Maybe they can help. If I remember correctly, a Torx bit pattern is a proprietry design. Getting the pocket specs should not be too difficult since many products are made with that pocket. You can also google "torx specifications" and allot will come up. I think the non proprietary name is Hexalobular. Try googling that.

http://www.indfast.org/
http://www.fmwfasteners.com/product...oorboard-Screws/Torx-Floorboard-Screws-Type-F
 
Last edited by a moderator:

JLyt207

Involved In Discussions
#3
As Mike said, it is a propriety design from a company named Camcar. I believe that Acument Global Tech. is the latest corporate owner. You may want to try them for specs.
 
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