Known uses (there may be others in addition):
• Catalina 34: Upper and lower shrouds
• Catalina 36: Upper and lower shrouds

• Easy to flush out salt and debris with fresh water
• Pin securely with cotter pins that won't release unexpectedly like jam nuts
• Obvious visual check of turnbuckle adjustment
• Bronze threads won't gall like stainless against stainless

• Pin diameter: 1/2"
• Overall length of body: 6-1/2"