Discover our range of malleable cast iron fittings, a reference choice for your installations. Compliant with the EN 10242 standard, these components are renowned for their robustness and durability. Whether for plumbing networks (water, heating), industrial piping, compressed air or gas systems, our fittings offer unfailing tightness and reliability. Explore our subcategories, including white and black core cast iron fittings, as well as galvanized models for added corrosion protection.
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.
Equal 90-degree galvanized female female malleable cast iron for distribution of water, drinking water, gas, steam, liquid and non-corrosive gas. CVC systems.
Equal 90-degree galvanized female female malleable cast iron for distribution of water, drinking water, gas, steam, liquid and non-corrosive gas. CVC systems.
Reduced 90-degree galvanized female malleable cast iron for distribution of water, drinking water, gas, steam, liquid and non-corrosive gas. CVC systems.
Reduced 90-degree galvanized female malleable cast iron for distribution of water, drinking water, gas, steam, liquid and non-corrosive gas. CVC systems.
A 45-degree wide-radius male female galvanized malleable cast iron curve for the distribution of drinking water, gas, liquid steam and non-corrosive gas.
A 45-degree wide-radius male female galvanized malleable cast iron curve for the distribution of drinking water, gas, liquid steam and non-corrosive gas.