Known uses (there may be others in addition):
• Catalina 28: Upper shrouds, backstay, forestay
• Catalina 30: Forestay, upper shrouds, and some early backstay applications
• Catalina 320: Bridle wires
• Catalina 34: Bridle wires
• Catalina 36: Bridle wires

• 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: 3/8"
• Overall length of body: 5-3/4"