Black jam nut

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guruboy

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Picked up an Atomic reg that came with a matte black nut.

First time seeing one.

9B505F9A-414F-498D-88DF-6B9F1A0DC609.jpeg
 
I have seen many. The very first regs came with a delrin jam nut. Not sure when they switched to a chrome plated brass jam nut, at least by 2003.
 
Is that the primary 2nd? Don't all Atomic regulators come with the "Comfort Swivel Hose"? I had to buy some special parts (maybe the jam nut) to change to a normal hose.
 
https://www.shearwater.com/products/teric/

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