Where is Ground Clamps [RE-wrenches]

[Ray Walters]

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Hi All;

I use a 12-24 thread x 7/8" long #4 TEK Screw.  Its not Stainless but 
galvanized. I wouldn't think a stainless screw would have the hardness or 
strength to be a self-tapper. This TEK screw can self-tap into 1/2" steel 
plate. I use it regularly for mounting J boxes and ground lugs to 6" 
mounting poles. It's mean and it's NOT a sheet metal screw. Also, you can 
run a regular 12-24 machine screw (bolt) into the hole after self-tapping 
for those pesky inspectors.
Forgive my ignorance, but where in the code does it say equipment grounding 
screws have to be green? There are plenty of UL listed devices that don't 
have a green screw. (i.e. Trace Inverters). Maybe little ground symbol 
stickers would keep everyone happy?

Ray

At 08:00 AM 5/16/2003 -0400, you wrote:
>Bill,
>
>I think most inspectors would not object to painting the screw heads green.
>Certainly this is not as convenient as a green screw that can be purchased 
>that
>color.
>
>An installer could offer the inspector a choice between a stainless steel 
>screw
>with a field painted head or a standard 10-32, green grounding screw installed
>in a pre-drilled, properly tapped hole.
>
>Dick Ratico
>Solarwind Electric
>P.O. Box 402
>Bradford, VT 05033
>
>
>
>--- You wrote:
>I don't have a readily available source for the screws. The ones I used came
>in the Schott residential kit. I think the specification would be a
>stainless 3/16"x 3/4" fine thread self-tapping screw. Some inspectors
>require green ground screws, but I don't know of a source for green
>stainless screws. Anybody else have a suggestion.
>
>Bill.
>--- end of quote ---
>
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