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 Female S100x8 - male threaded 2'' NPS fitting from CPP (Reference: 100186) is a professional adapter in glass fiber reinforced polypropylene. Designed to connect S100x8 valves to 2'' BSP threaded networks, it guarantees perfect sealing and exceptional chemical resistance. Ideal for industrial, agricultural and storage installations...
The Female S100x8 - male threaded 2'' NPS fitting from CPP (Reference: 100186) is a professional adapter in glass fiber reinforced polypropylene. Designed to connect S100x8 valves to 2'' BSP threaded networks, it guarantees perfect sealing and exceptional chemical resistance. Ideal for industrial, agricultural and storage installations...
The CPP female S100x8 to male 2'' S60x6 adapter in HDPE enables professional thread conversion between different fitting standards. Ideal for connecting 3'' valves to 2'' systems, particularly on IBC 1000L tanks. Reference 100112 , this fitting guarantees watertight and durable connection thanks to its high-density polymer...
The CPP female S100x8 to male 2'' S60x6 adapter in HDPE enables professional thread conversion between different fitting standards. Ideal for connecting 3'' valves to 2'' systems, particularly on IBC 1000L tanks. Reference 100112 , this fitting guarantees watertight and durable connection thanks to its high-density polymer...
Female S100x8 fitting - male BSP 3'' threaded in glass fiber reinforced polypropylene. Ideal for connecting your IBC 1000L tanks to BSP 3 inch piping systems. High performance material ensuring excellent chemical resistance and optimal durability. Food contact compatible, facilitates integration with your existing...
Female S100x8 fitting - male BSP 3'' threaded in glass fiber reinforced polypropylene. Ideal for connecting your IBC 1000L tanks to BSP 3 inch piping systems. High performance material ensuring excellent chemical resistance and optimal durability. Food contact compatible, facilitates integration with your existing...
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