[eschaider]

There are a number of high strength steels like 4330 /4340 / 8620 /9310 that you can use. Probably any will work. Get it centerless ground and cut the o-ring groove and you should be done. I took a quick look at one of the online metals suppliers and a centerless ground 36 inch long ¾" diameter bar of W1 tool steel costs about $24.

I don't know the length of the Tremec shaft but lets say 6 inches. That means the raw material for 6 shafts would come to about $4 per shaft. Cut an o-ring groove on one end, send it out for heat treat and you would probably be around $10 or $15 cost per replacement shaft. If you wanted you could get exotic with 9310 or 4330 and have a super piece.


Ed