Howdy from Jackson Hole! Here's what worked for me...
Stainless steel Hose Barb 3/8" barb X 1/2" male
1/2" female threaded hose bibb with nail flange, 1/4 turn Holes fit perfectly replacing the crappy old plastic valve.
10 X 1" stainless steel sheet metal screws, pan head. "
Pan head" means the head is flat on the bottom, not angled for wood.
(I replaced factory screws with SS).
Teflon plumber's tape
Small tube of white caulk
Nitrile gloves
Masking tape & vinegar (to mask around valve & professionally clean up glop)
Paper towels
Ratchet screw driver with variety of fittings
2 trusty vice grips
Heat gun or hair dryer (crucial for softening up hose plastic getting stuff in & out)
On my beloved Fleet, the flange around the valve rested partly on a trim piece. I could have remved it & simply stuffed caulk into the hole, but instead used a grinder to brind down diameter of a screw head (for a professional look).
I now have brass fittings on both the outside sink drain, & water tank drain. For the life of me, I don't know why FWC doesn't send'em out this way from the factory, other than clean "looks" when new.
Happy Trails!