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YounginAyo
May 7, 2015, 3:10 PM
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Registered: Apr 8, 2013
Posts: 7
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Hey whats up fam,
I recently purchased an old lot of bolts/hangers from a local shop for a very good price.
These are all 3/8 inch bolts. I am wondering if anyone can tell me if these are Stainless based on the design? (I currently only use powers 5 pc PS bolts)
Here are some pics..
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kennoyce
May 7, 2015, 3:52 PM
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Registered: Mar 6, 2001
Posts: 1338
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YounginAyo wrote: Hey whats up fam, I recently purchased an old lot of bolts/hangers from a local shop for a very good price. These are all 3/8 inch bolts. I am wondering if anyone can tell me if these are Stainless based on the design? (I currently only use powers 5 pc PS bolts)
Sorry to tell you that none of the bolts pictured are stainless. The top group appears to be confast wedge anchors and aren't the best, but aren't the worst either, the middle group appears to be standard red heads, and the bottom four bolts are certainly not suitable for rock climbing use.
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Kinobi
Jul 7, 2015, 6:29 AM
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Registered: Sep 16, 2009
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The top ones appears to be stainless (painted). You should have something marked on the nut (A4 or A2 in Europe). Check them.
The other ones are zinc plated.
As far concerning painting stainless read here...
http://www.rockclimbing.com/cgi-bin/forum/gforum.cgi?post=2262624;sb=post_latest_reply;so=ASC;forum_view=forum_view_collapsed;
Ciao,
E
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kennoyce
Jul 7, 2015, 5:34 PM
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Registered: Mar 6, 2001
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Kinobi wrote: The top ones appears to be stainless (painted). You should have something marked on the nut (A4 or A2 in Europe). Check them. The other ones are zinc plated. As far concerning painting stainless read here... http://www.rockclimbing.com/cgi-bin/forum/gforum.cgi?post=2262624;sb=post_latest_reply;so=ASC;forum_view=forum_view_collapsed; Ciao, E
The top ones could be stainless, but I don't think they are. They lack the typical blueish cast that you see from zinc plating, but if you look at the color of the concrete in the pics it's obvious that the white balance is off when comparing them to the concrete in the lower images, and if you adjusted the white balance they would have the same blueish cast. The biggest thing that screams zinc plated in the top photos is the shininess of the cones, I've never seen a stainless bolt that has a cone as shiny as what is pictured there.
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miklaw
Jul 8, 2015, 9:48 AM
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Registered: Jan 13, 2004
Posts: 99
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An easy check for stainless (though not what grade of stainless) is to put a magnet on them, most stainless (including the common 304 and 316) are non-magnetic.
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