norinco 870 stock screw threads?

BBq_Woa!

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Hey there
can someone tell me what the measurement of the threads and screw diameter are in the stock screw on a norinco 870?

I need to go buy a long screw to accomodate a different stock

thanks so much
-Derek
 
Bring the screw you already have to Home Depot. They have all the nuts that would fit onto it (they're all ligned up mounted on the display unit) so you should easily be able to find it no problem. Trial and error :)

Good luck! Maybe you can post it here when you find out what it is, exactly...
 
i found out today after an exhaustive trek
it's metric.
M6 ..
no one has M6 screws long enough to match.
so what I'm going to have to do is use some M6 threaded dowel, and an A-corn nut, and then cut to the appropriate length
what a pain in the ass :(
-Derek
 
actually a 1/4" 28 TPI MIGHT fit, its not "proper" but the imperial bolt only differs by 0.014 O.D which will probably be made up for in clearance cut into the nut, and the clearance in the bolt ( usually 0.005" for each piece )

the pitch only differs by about 0.003" ( again clearance / sloppy tolerances )


also if your looking in a hardware store make sure your checking UNF not UNC
 
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