End cap details:
• Portion that goes into spreader:
    Height: ~12.7mm (~1/2")
    Depth, including spring loop: ~45mm (~1-3/4")
    Length: ~43mm (~1-11/16")
• External portion:
    Height: ~22mm (~7/8")
    Depth: ~21mm (~13/16")
    Length: ~49.5mm (~1-15/16")

Bolt details:
• Thread and thread length: M5 (5mm) x 35mm (~3/16" x ~1-3/8")
• Length, overall: 38.2mm (~1-1/2")
• Head, diameter: ~8.2mm (~5/16")

Nut details:
• Thread: M5 (5mm)
• Flats: ~7.7mm (~5/16")
• Thickness: ~3.75mm (~5/32")

1) In around 2012 Catalina started supplying the boats with Seldén masts and standing rigging. Current production Capri 22s (hulls 1259 and up), Catalina 22 Sports (hulls 15759 and up) are now supplied with Seldén rigs. This part is only for boats with Seldén rigs.

2) The specialty round head bolt and square nut are only available as part kit and are easily dropped overboard. Be mindful when adjusting your rigging or when replacing these parts.