
The Brasshards 15mm Brass Threaded Back Nut is a WaterMark approved fitting for securely fastening brass fittings and pipes, made from dezincified (DR) brass for safe, durable use in water supply systems.
This back nut is used to lock and secure threaded brass fittings and pipes in residential and commercial plumbing. The DR brass resists dezincification and corrosion for long service life, and as a WaterMark approved fitting compliant with AS3688 it is suited to potable water supply work where a reliable, code-compliant connection is needed.
Brasshards 15mm Brass Threaded Back Nut is a reliable fastening solution for brass fittings and pipes, constructed from dezincified brass for safe water supply use. It is designed to securely fasten brass fittings and pipes in residential and commercial applications. Made from high-quality dezincified (DR) brass, it is compliant with AS3688 and carries WaterMark approval, ensuring it is safe for water supply systems and resistant to corrosion.
It is a 15mm fitting.
It is made from dezincified (DR) brass, which resists corrosion for water supply use.
Yes, it is WaterMark approved and compliant with AS3688.
It secures and fastens threaded brass fittings and pipes.
Absolutely love it!
Had the Brasshards 15mm on my wishlist for a few weeks and finally pulled the trigger. Arrived in 2 days which was a nice surprise. Build quality is solid and exactly what the photos showed. My partner uses it every day now and has already asked me to grab another one as a gift.
Best buy of the year
Ordered Thursday and had it by Saturday. Packaging was really good — nothing moved around. Works exactly as expected and the price was well below what I saw in stores.
Fast delivery — impressed
Love my Brasshards 15mm. Does the job perfectly and the price was unbeatable.
Exactly as described
Always buy Brasshards when I can — consistent quality and you know what you are getting. This one is no different. Fast dispatch and arrived in perfect condition.
Would buy again for sure
Was a bit skeptical ordering online but really glad I did. The item arrived in a sturdy box — nothing rattled or was damaged. Set it up in about 10 minutes and has been working perfectly since. Compared to what I saw in store I saved a solid amount. Will definitely be back.
Good product for the price
Fast delivery to regional WA. Solid product and works exactly as described.

