Orphan Thread Size Swivel Studs

M

Mike Webb

CGN Ultra frequent flyer
GunNutz
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Location
Southern N.B.
Recently bought a really nice old rifle that is missing the original sling studs. It's built by Niedner in the 1920's so a class act all the way. Front sling stud formerly was mounted by screwing through the stock into a barrel band lug in the European fashion. Thread size is number 12-32 UNEF. Threaded studs I have are 10-32 which of course screw in but are sloppy as hell. A number 13 drill (tap drill for 12-32) just glides into the threaded hole in the barrel lug so I'm certain 12-32 is proper size. Anybody got any old studs with 12-32 threads on them. Have to be 7/8 inches or 1 inch long from bottom of stud to end of thread. Longshot but outside of that I will have to make one. Like to have it original, I could just mount a wood screw stud in forend but figure the barrel band mounting may damp barrel vibes, it was that way for a reason and Otto Niedner was renowned for great barrels and accurate rifles.
If anybody is interested in Niedner rifles, it is a pre ww2 Mauser Oberndorf Kurz action which are extremely rare. Also chambered in .250/3000 Savage.
 
Problem maybe solved. Doing some research, seems Niedner bought sights and sling parts from Recknagel in Germany. They are still in business and stock same studs. Turns out M5x.8 threads which is only a couple thou off 12-32 in diameter and pitch. Hard to get pitch gauge in 5mm blind hole to see if perfect match. Just assumed American rifle would have standard fittings. That's what happens when you assume things. Makes sense as Niedner was German descent as we're a lot of his tradesman. Thx for the reply.
 
Mike Webb said:
Problem maybe solved. Doing some research, seems Niedner bought sights and sling parts from Recknagel in Germany. They are still in business and stock same studs. Turns out M5x.8 threads which is only a couple thou off 12-32 in diameter and pitch. Hard to get pitch gauge in 5mm blind hole to see if perfect match. Just assumed American rifle would have standard fittings. That's what happens when you assume things. Makes sense as Niedner was German descent as we're a lot of his tradesman. Thx for the reply.
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If you drip candle wax into the recess you can usually screw it out once it hardens, and get a measurement.
Put a matchstick or something in the hole first, so you have something to hang onto.
M5 is a nominal .197", on the small side of the middle between #10(.190") and #12(.216"). I would think that a #10 would have to grab at least a little in an M5.
Hope your Recknagel stud works!
 
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