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.
Plastic ball for flat rod float valve reference 918 designed to ensure precise water level regulation in your tanks and reservoirs. Compatible with Multitanks float valves ref. 913 from 3/4'' to 4''. Resistant plastic construction with stainless steel screw for optimal durability. Thermal resistance from...
Plastic ball for flat rod float valve reference 918 designed to ensure precise water level regulation in your tanks and reservoirs. Compatible with Multitanks float valves ref. 913 from 3/4'' to 4''. Resistant plastic construction with stainless steel screw for optimal durability. Thermal resistance from...
The threaded stainless steel strainer alone is the essential accessory to protect your suction systems. Equipped with a stainless steel filter mesh and a high-quality ABS polymer connection, it fits on all non-return valves that comply with the ISO 228-1 standard. Capable of operating between...
The threaded stainless steel strainer alone is the essential accessory to protect your suction systems. Equipped with a stainless steel filter mesh and a high-quality ABS polymer connection, it fits on all non-return valves that comply with the ISO 228-1 standard. Capable of operating between...
The single brass jet divisional water meter is the reference instrument for individual cold water metering (0/+50°C). MID certified and protected against magnetic fraud, it offers R80 accuracy in horizontal and high installation flexibility (U0D0). Its 360° rotatable dry dial makes it easy to...
The single brass jet divisional water meter is the reference instrument for individual cold water metering (0/+50°C). MID certified and protected against magnetic fraud, it offers R80 accuracy in horizontal and high installation flexibility (U0D0). Its 360° rotatable dry dial makes it easy to...
Adjustable piston reducer. Iso 228-1 "Gas" female connection (BSPP). Indicator of the direction of fluid on body. Disassembly possible for maintenance.
Adjustable piston reducer. Iso 228-1 "Gas" female connection (BSPP). Indicator of the direction of fluid on body. Disassembly possible for maintenance.
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