J/30 Class Association Forums J/30 Marketplace Looking to Buy Something Need rebuilt mast Sheave Box K-10658 by Oct 1.

Dealing with Antique Boats. The halyard box i got at Wickford Marine was not an exact duplicate of the one I replaced ... difference is that the pin in the replacement is 1/2 in. vs. the old one being 3/8 in.

So drilled out 3/8 hole in the new head stay swage fitting to 1/2. didn't notice it until we were trying to attach the new headstay. If you go to original post in this thread ... you will note that the part calls out 3/8 or 1/2 pin options ... duh. The pin at the stem is 1/2 in.