Holt Captive Bung Screw(Ha323)

The Holt Captive Bung Screw (HA323) is a precision-manufactured marine-grade drain fitting designed for boats where a secure and captive bung is required. It allows hull drainage when required yet ensures the screw-bung remains captive and cannot be lost overboard - a useful upgrade for Irish waters where bilge drainage, splash back and frequent launch/landing prevail. The captive screw design provides peace of mind and improved convenience, especially in club-fleet or training craft contexts.

Features

• Captive screw mechanism ensures the bung remains attached and cannot be misplaced
• Designed for marine use - good for hull drainage holes, bilge outlets or dinghy drain setups
• Simplifies maintenance - easy to remove/replace but securely retained when fixed
• Ideal for Irish sailing conditions where frequent launches, damp weather and salt exposure demand reliable gear
• Compact, low profile fitting that integrates well into hull design without snag or bulk
• Useful spare part for dinghies, club boats or leisure craft - helps keep you on the water rather than delayed by broken or lost bungs

Specifications

• Function: Captive screw bung / drain fitting
• Typical Application: Hull drain, bilge outlet on small boats & dinghies
• Installation: Screw bung via fixed socket (check hull thickness & hole size)

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Dimension Drawing