Help me with a Fidelity Research FR64 part

Dear dover, Lew is my English teacher so I agree with him and
consequently disagree with you, ''NUT'' and ''STABILIZER'' are
different ''animals'' despite the right picture on your reference. 
The name by your picture should be ''NUT'' and not STABILIZER.
The later are much bigger and heavier. One can see the difference
by comparing the original FR-64 NUT with B-60 stabilizer. 

@nandric 
No, you miss the point - English is not the primary language in Japan, and that is the mistake you make. Perhaps you could write to the advertiser in Japan and explain why they are wrong when they call a nut a stabilizer, as they have done for the past 10 years that they have been selling them.
As an aside they call a turntable "mat" a "plate" - you might like to correct them on that whilst you are at it.

Dear dover, this is the most strange argument against my proposition
I have ever heard; that primary language in Japan is not English.
If you read whatever translation from Japanese in English you can
hardly understand what they mean (grin). However our discussion is
in English and in this language one discriminate between NUT and
STABILIZER. The function of an name is to refer to some object in
the so called ''reality''. In this reality one can see the difference 
between an nut and an stabilizer. If ''form follows function''  then
the function of both objects is different: nut is to fasten something to
something else , stabilizer to , uh, stabilize with weight the involved
construction. 

The original N-60 is in this FR catalog from the 80's.
The name of that part is "N-60 Arm Stabilizer NUT" - this is written on the sticker on my original N-60 that i am using with FR-64fx tonearm. The original N-60 cost at least $250-300  

This part is an upgrade over the stock nut the OP is asking for, i have two (one from 64s, another from 64fx). The nut from 64fx is bigger and better.   

I can see how it could be referenced as a stabilizer by the Japanese as a poor translation.
In its job of fastenening the arm under the plinth it does indeed "stabilize" the arm.

Not the way we would normally describe the item but I can see how the Japanese have done so.