Brass compression fittings are plumbing devices used to connect two brass pipes or tubes in a tight manner. Brass is an alloy of copper and zinc that is durable, corrosion resistant and easy to work with. Brass compression fittings are ideal for commercial and industrial plumbing applications as they are able to withstand higher pressures than plastic fittings. They are also chemical resistant and can be used in water treatment applications. Brass compression fittings are available in a variety of sizes and shapes to meet different installation needs. However, they can be more expensive than plastic fittings due to the higher quality of the material.
Not sure which fitting you need? Tell us what you have, we show you what screws onto it — live prices and stock.
Pipe thread chart: inch / mm conversion (BSP, 15/21, 20/27, S60x6)
A “1/2 inch” thread measures 20.96 mm, not 12.7: in plumbing, the inch size is not converted, it is read from a chart. Here you will find the inch / mm correspondence of every common thread (BSP or “gas thread”, French names 15/21 · 20/27 · 26/34, NPT, S60x6 IBC tanks, Guillemin, Camlock, PVC), a tool that identifies your thread and the fitting that goes with it, and the pitfalls to avoid.
Which thread do you have? Which fitting do you need?
No need to know the name of your thread. Tell us what you need to connect to, or type what you know (“20/27”, “3/4 inch”, “S60x6”, “26.4 mm”): we identify the thread and show you the fittings that go with it. Dimensions according to ISO 228, ISO 7 and ASME B1.20.1.
✔ Shipped next working day from our stock✔ 4.5/5 from more than 6,400 customer reviews✔ Not sure? Describe what you need, we will find the fitting with you⎙ Printable thread gauge (PDF, actual size)
No need to know the name of your thread. Just answer the question: what do you need to connect to?
With a caliper, measure the outside diameter of a male (thread visible on the outside) or the inside diameter of a female (thread inside the hole), at the root of the thread.
The 7000 Series Brass Compression Straight Fitting with Female Free Nut facilitates your connections to fixed threads without twisting the PE tube. Certified PN 25 bar and compliant with DIN 8076, it offers guaranteed flat joint tightness thanks to its wide reaches. Made of CW617N brass and certified for...
The 7000 Series Brass Compression Straight Fitting with Female Free Nut facilitates your connections to fixed threads without twisting the PE tube. Certified PN 25 bar and compliant with DIN 8076, it offers guaranteed flat joint tightness thanks to its wide reaches. Made of CW617N brass and certified for...
The 7000 Series Brass Compression Tee with Center Female Thread is the high-performance branch solution (PN 25) for your PE networks. Made of CW617N brass and certified for drinking water, it offers an ISO 7-1 compliant center tapped outlet for easy accessory connection. Its H62 notched ring system and wide...
The 7000 Series Brass Compression Tee with Center Female Thread is the high-performance branch solution (PN 25) for your PE networks. Made of CW617N brass and certified for drinking water, it offers an ISO 7-1 compliant center tapped outlet for easy accessory connection. Its H62 notched ring system and wide...
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