My strap hook is a monster. I comes with the replacement strap. The safety chain hook is 3/8" +/- as is the chain. When there was tension on the winch strap hook, it was difficult to get the safety chain hook in the single eye. Slack the strap and it was easy.
The reason for this project was my concern associated with the condition of what others have found with their eyes. There was simply no easy way to verify that my bow eye was in good shape. Woody had given me the 'M' eye about a year ago from when he ordered his. I finally tackled the project.
Once I gained access to the inside of the eye, and found it to be in excellent shape, I could have stopped, patched the hole and all would have been fine. However, since I had the 'M' eye, and some help to install it, and recalled the problems of connecting the safety chain without several extra steps, I chose to replace the original.
That replacement is the subject of my above report.
I still have the original eye if anyone who has found a corroded eye would like to have it.
StreamFixer