Think about where the threaded hole exists the think where the load will be in the direction of rotation. Every 90 degrees there is a change between tension and compression. If the rotation "pulls" where the driving yoke is "ahead"of the hole, that's tension, if the driving yoke is behind the hole "pushing" it, that compression.
Comprende?
Look up Moog Super U-Joints. I love them for the price. They are coated so the don't rust too...
Nice joints for the price.
GT
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