Hi Dean,

Is there a particular reason you chose a 24 thread per inch screw rather than
32? Standard green grounding screws are 32 tpi, as are electrical device screws 
(receptacles, switches), and box screws.

I wonder if the finer 32 thread offers a superior mechanical and electrical
bond, particularly in thin metals like module frames.

Thanks for taking the initiative here.

Best.
Dick Ratico
Solarwind Electric
P.O. Box 402
Bradford, VT 05033
802-222-9028

Dean T. Newberry wrote:

Hi yAll,
I have requested Rainbow Fasteners to request a screw manufacturer to 
fabricate a standard pattern, 12-24 flange head self drilling screw in 
404 stainless for our use. I have placed an initial order for 50k units, 
I expect to hear back the first week of june the willingness of the 
manufacturer to produce the order. The noncompliant screw, 12-16 flange 
head self driller I am using now costs $5.15/lb I expect the 12-24 
pattern to be a similar price.
cul  deant@dcn.org
 

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