Glide Junior Kayak Drain Plug (Tadpole)

This is a plug for a drain hole in a "Glide" junior kayak sold in Australia (model "tadpole"). I suspect other "Glide" kayaks use identical plugs but you are on your own there.

The threads match the "tadpole junior series" drain plug perfectly and the rim adequately seats an ad-hoc gasket into place between the plug and the boat body.

Adding more axial length to the "gear-tooth" grip finger tightening features may be useful.

This 3d file prints perfectly in alloy 910 (nylon) as-is.