Iike orwel boy says you could probably get a thread good enough for a gland by running a bsp tap through from one side you'll get a 3/4"bsp tap for under a tenner from ebay, cut the thread & sikaflex the gland in & your probably good to go
3/4bsp is actually the bore size so should be big enough to get your hose through
Might need to be npt gland but same applies
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