Connect Faucet coupling nut to US beer nut (hex tailpiece nut)
How to join 7/8"-14 (faucet to shank) and 7/8"-14 (1" hex), and what stops it leaking.
Not compatible. Faucet coupling nut and US beer nut (hex tailpiece nut) do not share a mating thread, so there is no adapter between them; fit the part that matches your hardware.
The two ends
- End A
- Faucet coupling nut (7/8"-14 (faucet to shank))
- End B
- US beer nut (hex tailpiece nut) (7/8"-14 (1" hex))
- A seals on
- metal to metal as the nut draws the faucet body onto the shank nose
- B seals on
- compresses a rubber washer between the tailpiece and the shank end
- Part needed
- matched replacement, no adapter exists
The part to buy
A faucet coupling nut locks a faucet onto the front of a shank and a beer nut secures a tailpiece onto the back; both are 7/8-14 but they sit on opposite ends of the shank and are not interchangeable in use. You need one of each, not two of the same.
They share a thread, which is why people mix them up in a parts bin, but the faucet nut is knurled for the faucet body and the beer nut is a hex that traps a washer. Order the front nut and the back nut as a pair for a shank build.
Related connections
Sources: American Homebrewers Association: the anatomy of a beer faucet (7/8-14 shank, beer nut, tailpiece, washer) ยท Installation Parts Supply 7/8-14 (5/8 BSP US beer industry standard) beer nut / tailpiece nut