ON INSPECTION I SAW THAT THE NUT ON THE FORESTAY BOLT THAT PASSES THROUGH THE ANCHOR ROLLER ASSEMBLY WAS RUSTED DUE LIKELY TO STRAY CURRENT YET TO BE FOUND. I WISH TO REPLACE THE 18MM HEX BOLT AND NUT BUT AM AWAY FROM THE BOAT AND NEED TO KNOW THE LENGTH OF THE HEX BOLT AND TYPE OF STAINLESS STEEL USED. I THINK THE BOLT IS ABOUT 55MM LONG BUT WOULD LIKE CONFIRMATION. CAN ANYONE LET ME KNOW? APPRECIATE IT VERY MUCH. ALSO DO YOU KNOW THE SS USED: 316 OR 8-18 ETC?