broken bolt, net.analysis

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    I picked this picture up somewhere.  I thought it was here, but I couldn't find the correct thread if so.

 Does this bolt belong to anyone here?

 What it looks like, squinting at the computer screen, is fatigue failure.  The lip on the right side, over the ejector hole, is darker than the left side.  Also note the difference is granularity over the ejector.  The ejector plunger is recessed slightly into the ring, so there's a sharp edge at the corner at the bottom unless someone smoothed it out.

 My best guess is that the failure was caused by repeated strikes from the accelerator.  A crack started where the dark area is.  The bolt held long enough for powder residue to build up in successive shots, then finally the crack spread far enough that the part to the left simply broke off.

 Anyone have more detailed/accurate information they could share?

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TRX302 Members Profile Send Private Message Find Members Posts Add to Buddy List Callahan's Auto Mag Joined: 02 Dec 2011 Location: Arkansas Status: Offline Points: 682	Post Options Post Reply Quote TRX302 Report Post Thanks(0) Quote Reply Topic: broken bolt, net.analysis Posted: 19 May 2012 at 6:30pm
	I picked this picture up somewhere. I thought it was here, but I couldn't find the correct thread if so. Does this bolt belong to anyone here? What it looks like, squinting at the computer screen, is fatigue failure. The lip on the right side, over the ejector hole, is darker than the left side. Also note the difference is granularity over the ejector. The ejector plunger is recessed slightly into the ring, so there's a sharp edge at the corner at the bottom unless someone smoothed it out. My best guess is that the failure was caused by repeated strikes from the accelerator. A crack started where the dark area is. The bolt held long enough for powder residue to build up in successive shots, then finally the crack spread far enough that the part to the left simply broke off. Anyone have more detailed/accurate information they could share?

schwammy Members Profile Send Private Message Find Members Posts Add to Buddy List R.I.P. Joined: 19 Apr 2011 Location: Birmingham, AL Status: Offline Points: 147	Post Options Post Reply Quote schwammy Report Post Thanks(0) Quote Reply Posted: 19 May 2012 at 9:06pm
	I remember that pic... let me see if I can find the thread. I think it was explained...

schwammy Members Profile Send Private Message Find Members Posts Add to Buddy List R.I.P. Joined: 19 Apr 2011 Location: Birmingham, AL Status: Offline Points: 147	Post Options Post Reply Quote schwammy Report Post Thanks(0) Quote Reply Posted: 19 May 2012 at 9:15pm
	Getting closer (I think...) Based on this thread (http://www.amtguns.info/forum_posts.asp?TID=1007&KW=&PID=8879&title=primers#8879) I believe it is George's pic...

TRX302 Members Profile Send Private Message Find Members Posts Add to Buddy List Callahan's Auto Mag Joined: 02 Dec 2011 Location: Arkansas Status: Offline Points: 682	Post Options Post Reply Quote TRX302 Report Post Thanks(0) Quote Reply Posted: 19 May 2012 at 11:19pm
	Well, it looks like the same blue plastic thingie anyway!

Gerry Members Profile Send Private Message Find Members Posts Add to Buddy List R.I.P. Joined: 08 Mar 2008 Location: MI Status: Offline Points: 1085	Post Options Post Reply Quote Gerry Report Post Thanks(0) Quote Reply Posted: 20 May 2012 at 12:18am
	I think GH posted that sometime ago. Gerry