Brasshards 20mm Brass Threaded Back Nut - WaterMark Approved

★★★★
85 reviews · 268+ sold
$4.21 $6.31 -33% OFF
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Last purchased 17 minutes ago by someone in Geelong
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Description & Specs

The Brasshards 20mm Brass Threaded Back Nut is a WaterMark approved fitting for fastening brass fittings and pipes, made from dezincified (DR) brass to deliver safe, durable performance in water supply systems.

  • Size: 20mm
  • Type: Brass threaded back nut
  • Material: Dezincified (DR) brass
  • Approval: WaterMark approved, compliant with AS3688
  • Model number: 5BN020B

This 20mm back nut is used to lock and secure threaded brass fittings and pipes in residential and commercial plumbing. The DR brass is engineered to resist corrosion and dezincification for a long service life, and as a WaterMark approved fitting compliant with AS3688 it suits potable water supply work where a reliable, code-compliant connection is required.

More about this product

Brasshards 20mm Brass Threaded Back Nut is a durable fastening solution designed for brass fittings and pipes, ensuring compliance with Australian standards. It is constructed from high-quality dezincified (DR) brass, making it suitable for residential and commercial applications. The fitting is WaterMark approved and compliant with AS3688 for water supply use, and the DR brass is engineered to resist corrosion.

Questions & Answers

What size is this back nut?

It is a 20mm fitting.

What material is it made from?

It is made from dezincified (DR) brass for corrosion resistance.

Is it suitable for water supply?

Yes, it is WaterMark approved and compliant with AS3688 for water supply systems.

What is it used for?

It secures and fastens threaded brass fittings and pipes.

Shipping & Returns

Standard Shipping Australia-wide
Ships in 1-2 business days from our Australian warehouses
30-Day Returns
Change your mind? Return within 30 days for a full refund. Item must be unused and in original packaging.

Customer Reviews

4.3 ★★★★☆ 144 reviews
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✓ Fast Delivery ✓ Great Quality ✓ As Described Verified Purchases
C
Chris N. 📍 Mackay QLD
3 months ago
✓ Verified Purchase

Great value for money

Spent a while looking for the right Brasshards 20mm and this kept coming up as the best value. I can see why — quality is impressive for the price. Delivery took just 2 days to Townsville which is great. Packaging was solid and everything intact. My partner and I both use it daily now. Highly recommended.

R
Rebecca J. 📍 Albury NSW
3 months ago
✓ Verified Purchase

One of my best online buys

Quality product at a fair price. Delivered quickly. Happy.

M
Matt D. 📍 Bunbury WA
3 months ago
✓ Verified Purchase

Happy with SuperSaver AU

Have bought Brasshards before and always been happy. Great price on SuperSaver AU and delivery was fast. Arrived perfectly packaged. Works flawlessly from day one.

Z
Zoe C. 📍 Bendigo VIC
4 months ago
✓ Verified Purchase

Fast delivery and perfect condition

Fast delivery and exactly what I ordered. Very happy with this.

A
Andrew F. 📍 Wagga Wagga NSW
4 months ago
✓ Verified Purchase

Outstanding value

Bought this on a bit of an impulse after seeing it on the site and really glad I did. Quality is much better than the price suggests — feels premium and well made. Ordered Monday and it arrived Wednesday in Sydney. Nothing loose or damaged. A few people have asked where I got it.

T
Tanya B. 📍 Mildura VIC
4 months ago
✓ Verified Purchase

Good buy — fast shipping

Really good value — compared it to similar products at twice the price and there is very little difference in quality. Fast shipping and arrived in perfect condition.