Concord 304 Stainless Steel Grooved Hex Lock Nut Pipe Fitting Set. Great for Home Brewing

got one of those 2-headed showerheads where one head is handheld. they come with plastic lock-nuts to secure the diverter in place where if you even slightly overtighten, they're busted. well, this thing absolutely rules for that job since it was made to prevent leaks in homebrewing and is made of metal.

Very good

Forms a good seal, you get what you bought

Using on a 1/2 inch npt pipe nipple on a mashtun cooler to install a sparge head. Not much to it. Threads are cut as specified.

Worked great to install thermowell in fermenter.

Exactly as advertised, great.

Very inconsistent sizing: I got 2 sets and one would only thread about 3 turns onto a 1/2” nipple, the other thread a bit further but not as far as a normal nut. Will be replacing or tossing. Runner o-rings are nice quality though.

Not 1/2 inch