Help me with a Fidelity Research FR64 part


I got a mint FR64 tonearm at a great price. Sadly there was a catch it did not have the nut that fastens the arm at the base. It is a really fine thread (25 threads per inch) in fact my machinist doesn't have tooling for this.

so I want to know if anyone out there knows where I can get the said nut, or if they have one they can sell me - thanks
parrotbee
@lewm regarding the FR B-60 replica:
I have solved the little play between the inner and outer parts of my B-60 base, i was very disappointed by fact that local machinists can’t make any parts like that because they don’t want to bother at all with indivitual orders for such a small part, too cheap for them, they all want money.

After chatting with Nikola i realized his screws are the same size (just different material) and also must be fixed to get rid of the little play between the parts.

A friend has fixed my screw yesterday for FREE by hammering the upper part of the steel screw to squash it a bit to expand the diameter of the "nose" of that screw which goes to the slot in the inner part to prevent the lateral movement. Now everything is solved and i have no play horizontal between the parts, the screw sits in the slot tightly and everything is just fine.

I recommend this simple method to anyone with the same problem with B-60!


Dear geofkait, Your question ''if those German ingineers were
the same which Russian send back after the war?'' is interesting.
Russian obsession with secrecy is the reason that much is
unknown about German-Russian military cooperation. To avoid
limitations prescribed by ''Versailles treaty'' Germans organized
their military development in Russia. What both parties learned
from each other is not known but in 1950 about 170 German
''scientist'' were sent back to Germany. According to Korolev
(Russian rocket scientist and  leader of ditto program) they were
useless to Russia. This means that Russians were further in
technological development in rocket- as well nuclear science.
Rockets are already used in the war as the so called ''Stalin 
organs'' .  Japan was in its development first dependant from
Holland which was the only state allowed in Japan. Their
expression for ''science'' is translation of ''Dutch''. But Holland
was to small for so many Japanese students. So they were sent
to Germany to study mechanical engineering. Before or around
the first WW.

Dear chakster, ''the nose'' of the screw should not be hammered
for obvious reason of damaging the thread. I used vice instead
assuming that the screw is not made from steel but some other,
softer material. For this reason one should not apply to much
force but proceed gradual.  
Fidelity-Reseach B-60 is not just an arm stabilizer, but a VTA on the fly, 
here is one.

Chak, that is not a genuine Fidelity Research B-60 base.
The genuine B-60 does not have the screw in the top-plate and hence has no horizontal movement at all.
I’ve had two reproduction B-60s with the surface screw and three genuine FR B-60s.
One of my reproductions had horizontal movement whilst the other didn’t (different ‘fakes’).

The difference between ''genuine'' and replica B-60 is $2000.
The genuine cost $2500 the replica $500. However this difference
is ''academic'' because the replica is not available anymore.
The only problem by the replica is the screw which connect the
outer and inner side of the VTA adjuster. As chakster and I discovered this can be easily corrected. One need to mark the
center position of the screw and then squeeze the opposite sides
with the vice in order to ''widen'' the ''nose'' of the screw, The screw
is easily reachable by unscrewing of the, uh, ''stabilizer''. Then 
check for the horizontal movement and try again if not satisfy. 
But one need to proceed careful because the most own just one
of those screws. So don't ''screw the screw''.