I don't think that electrical contact between the covers and the 2-D blocks is
intended to be established by the screw threads...It is established by contact
between the unpainted inner surface of the panel and the bare 2-D block when
the screw is tightened down...If you check one of the black
Will reply to the topic of corrosion with chassis screws on this thread.
The reply from John, G4BOU on the subject of lubricating chassis screws to
help prevent corrosion was:
'petroleum jelly' despite being a very good insulator has a lubrication
factor of 1
and any pressure (via the
There is another recessed, or cross-head screw in common use...It is called
Reed and Prince...Phillips has gained more popularity, but Reed and Prince,
in my humble opinion, is a better format...Phillips uses different size tips
and the tips are blunt, or rounded...Reed and Prince tips are
that is squared off. My preference is to use Reed and Prince cap screws
and the proper driver for them.
Bob Rennard N7WY
- Original Message -
From: Jeremiah McCarthy [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Thursday, September 29, 2005 7:18 AM
Subject: [Elecraft] Phillips Screws
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