warpspeed Posted March 7, 2013 Share Posted March 7, 2013 (edited) I'm going to mount a single side cmore on my STI with a standard frame. I have read several threads saying 5-40 are the standards but their were a couple of references to 6-32 or 6-40. Any thoughts ? Edited March 7, 2013 by warpspeed Link to comment Share on other sites More sharing options...
9X23Guy Posted March 7, 2013 Share Posted March 7, 2013 The two guns that I've had have both been 5x40. It seems to be the standard. The only downside is they are a little hard to find in a regular hardware store. Shootersconnection, Brazos, etc. sells them in three different lengths. I just go longer than normal and file to fit. Link to comment Share on other sites More sharing options...
kmca Posted March 7, 2013 Share Posted March 7, 2013 All mine have started out as #5. When they strip out, they get retapped to #6 Link to comment Share on other sites More sharing options...
warpspeed Posted March 8, 2013 Author Share Posted March 8, 2013 All mine have started out as #5. When they strip out, they get retapped to #6 I've never had them strip before but was thinking the #6 screws might be more robust. Especially with a 6-32 thread. Link to comment Share on other sites More sharing options...
kmca Posted March 8, 2013 Share Posted March 8, 2013 All mine have started out as #5. When they strip out, they get retapped to #6 I've never had them strip before but was thinking the #6 screws might be more robust. Especially with a 6-32 thread. Nope, one over zealous tightening and I was retapping those holes. The tap is easy, getting the right screws is another problem. I had to order them online. Oh well, if I ever have to do another, I've got 92 extra screws Link to comment Share on other sites More sharing options...
Jaxshooter Posted March 8, 2013 Share Posted March 8, 2013 The 5-40 is more than enough to hold the mount securely. Do not over tighten. When using allen wrenches do not use the long end for leverage to torque the mount screws. Use the short end between your thumb and fore finger to tighten them. Clean the holes an screws with a good degreaser or 91% alcohol blue loctie them and let them setup for 24 hours and they will stay tight. Link to comment Share on other sites More sharing options...
prebancolt Posted March 9, 2013 Share Posted March 9, 2013 (edited) The 5-40 is more than enough to hold the mount securely. Do not over tighten. When using allen wrenches do not use the long end for leverage to torque the mount screws. Use the short end between your thumb and fore finger to tighten them. Clean the holes an screws with a good degreaser or 91% alcohol blue loctie them and let them setup for 24 hours and they will stay tight. +1 I just finished tapping four frames, three 5-40 and one 6-32. Obviously the 6-32 is larger/stronger, but the 5-40s seemed to be surprisingly strong once the 4 screws were in and tightened. I am using mounted gas pedals and they are solid as a rock. They don't move. ...And one more advantage to going 5-40 is that IF you ever did strip the hole, you have the option of going to a larger screw. Edited March 9, 2013 by prebancolt Link to comment Share on other sites More sharing options...
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