The C-Brats Forum Index
Home |  Forums |  My Topics |  Calendar |  Event Signups |  Memberlist |  Our C-Dorys |  The Brat Map |  Photos

Square-drive stainless screws

 
Post new topic   Reply to topic    The C-Brats Forum Index -> All C-Dorys, All The Time
View previous topic :: View next topic  
Author Message
JMacLeod



Joined: 26 Jun 2018
Posts: 173
City/Region: Stuart
State or Province: FL
C-Dory Year: 2018
C-Dory Model: 255 Tomcat
Vessel Name: C-Shalom
Photos: JMacLeod
PostPosted: Sat Aug 13, 2022 1:09 pm    Post subject: Square-drive stainless screws Reply with quote
I noticed the stainless screws used in the window frames are a different composition than the stainless used in the door frames and grab handles.
All were exposed to the same conditions in this spot, but only the window screws show pitting and green corrosion.

Back to top
View user's profile Send private message
ssobol



Joined: 27 Oct 2012
Posts: 3372
City/Region: SW Michigan
State or Province: MI
C-Dory Year: 2008
C-Dory Model: 22 Cruiser
Vessel Name: SoBELLE
Photos: SoBelle
PostPosted: Sat Aug 13, 2022 2:25 pm    Post subject: Reply with quote
Seems like you have something other than SS screws in the window frames.

There are different grades of SS (e.g. 304 and 316). 316 is better than 304. Eventually 304 will show some surface rust. Never seen SS turn green.
Back to top
View user's profile Send private message
thataway



Joined: 02 Nov 2003
Posts: 20808
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
PostPosted: Sat Aug 13, 2022 3:13 pm    Post subject: Reply with quote
It would be interesting to see if these are ferrous metal. Take a magnet and see if it sticks to the Robertson (name of square drive--comes In 3 different sizes) screw. If green, then suspect some copper plating perhaps under chrome?

Agree with ssobol ref types of SS. However even some SS labeled "316" from China, may not really be 316 alloy.,
_________________
Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
KA6PKB
Home port: Pensacola FL
Back to top
View user's profile Send private message Send e-mail
Robert H. Wilkinson



Joined: 26 Jan 2011
Posts: 1234
City/Region: Port Ryerse
State or Province: ON
Vessel Name: Romakeme IV
Photos: Romakeme IV
PostPosted: Sat Aug 13, 2022 5:08 pm    Post subject: Reply with quote
https://www.trawlerforum.com/forums/s3/stainless-steel-brass-28408.html


This contains some good info.


Rob
_________________
Talk to me and I will listen-- but if its not about boats or fishing all I will hear is bla,bla,bla,yada,yada,zzzzzzzz
Back to top
View user's profile Send private message Send e-mail
JMacLeod



Joined: 26 Jun 2018
Posts: 173
City/Region: Stuart
State or Province: FL
C-Dory Year: 2018
C-Dory Model: 255 Tomcat
Vessel Name: C-Shalom
Photos: JMacLeod
PostPosted: Sun Aug 14, 2022 2:22 pm    Post subject: Reply with quote
thataway wrote:
It would be interesting to see if these are ferrous metal. Take a magnet and see if it sticks


Nope. Didn't stick.

Found a good variety of Robertson screws at Albany County Fasteners.
https://www.albanycountyfasteners.com/search.html?Per_Page=48&Search=square%20drive%20screw&Sort_By=bestsellers
I forgot the exact count, but 250 screws is enough to replace them all.

Back to top
View user's profile Send private message
JMacLeod



Joined: 26 Jun 2018
Posts: 173
City/Region: Stuart
State or Province: FL
C-Dory Year: 2018
C-Dory Model: 255 Tomcat
Vessel Name: C-Shalom
Photos: JMacLeod
PostPosted: Sun Aug 14, 2022 2:24 pm    Post subject: Reply with quote
Robert H. Wilkinson wrote:
https://www.trawlerforum.com/forums/s3/stainless-steel-brass-28408.html


This contains some good info.


Rob


A lot to digest.
Thanks Rob.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    The C-Brats Forum Index -> All C-Dorys, All The Time All times are GMT - 5 Hours
Page 1 of 1

 
     Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum



Page generation time: 0.1441s (PHP: 90% - SQL: 10%) - SQL queries: 24 - GZIP disabled - Debug on