Paul,

   One out fit got back to me so far. They question how many are required ?

John

My guess is 100. I just thought of a way of making them. I can get a hex head 10 mm with 1 mm thread pitch bolts
and EDM a hex socket in the head. Then machine the head to a flat head.

However I already redesigned the coupling to use the hex head bolts and bought the material today.

Paul Lamar

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