Transom Drain Plug & Bung – Fine Thread Boat Drain Fitting

Keep your boat's transom drainage system in working order with the Fine Thread Transom Drain Plug, a practical marine fitting designed for draining water from compatible boat hulls and compartments.

Available as a replacement bung only or a complete drain plug and base assembly, this threaded boat bung is suitable for maintenance, replacement and new installations on compatible recreational vessels.

The complete assembly features a fine-thread screw-in drain plug and a flattened oval mounting base with two screw-fixing positions. Installation of the complete base requires a 25mm (1-inch) mounting hole.

Whether you're replacing a lost transom bung, repairing a worn drain fitting or fitting a new drain point, the Tenob Transom Drain Plug offers a straightforward solution for compatible boat drainage systems.

Available online from Barton Marine NZ, supplying marine fittings, boat bungs and chandlery throughout New Zealand.

Key Features

• Transom drain plug and bung

• Fine-thread screw-in design

• Available as Bung Only or Complete

• Complete option includes drain plug and mounting base

• Replacement bung option for compatible existing bases

• 25mm (1-inch) mounting hole required for the complete fitting

• Flattened oval base with two screw-fixing positions

• Designed for transom drainage applications

• Suitable for compatible trailer boats, dinghies and small craft

• Allows water to drain when the bung is removed

• Useful for replacing missing, damaged or worn boat bungs

• Practical addition to boat maintenance supplies

Technical Specifications

Important: The 25mm dimension refers to the mounting hole for the complete assembly. It is not necessarily the bung's thread diameter. Check the thread and base dimensions before ordering a replacement plug.

Choose Bung Only or Complete

This product is available in two configurations to suit different maintenance requirements.

Bung Only

Choose the Bung Only option when you already have a compatible drain plug base installed and need a replacement threaded plug.

This is useful when the original bung has been lost, damaged or become difficult to use.

Before ordering, confirm that the existing base has the same thread type and compatible dimensions.

Complete Drain Plug & Base

Choose the Complete option when replacing the entire transom drain fitting or installing a new assembly.

The complete option includes the drain plug and matching mounting base.

The base has a flattened oval shape with two screw-fixing positions and requires a 25mm mounting hole.