This union nut (female threads) is designed to be used with a compression ring fitting. The nut has a M12 x 1 threads, making it suitable for an outer pipe diameter of 8 mm. To install, the union nut should be slid over the pipe first. Then, the pipe can be inserted into the compression ring fitting before tightening the union nut. This will ensure a leak-free seal. Fitting is made out of brass. It is made in accordance with the DIN EN 1254-2 standard.
UNL series
The UNL series includes union nuts designed for compression and/or cutting ring fittings. With threads from M8 x 1 to M52 x 2, they are ideal for pipe diameters ranging from 4 to 42 mm. Made out of brass, steel, or stainless steel 316 Ti (1.4571) so there is always a material suitable for your application. DIN 2353 load classes range from LL (very light) to S (heavy).
Specifications
Connection size : M12 x 1
Outer diameter (mm) : 8
Connection type : Inner thread metric
Material : Brass
Max pressure at 20 °C (bar) : 135
Standard : DIN EN 1254-2
Size of threaded connection [inch] : M12 x 1
![M12x1 x 8mm Brass Union nut for Compression fitting [10 Pieces]](https://www.coolgrittools.com/wp-content/uploads/2026/06/unl-b-10_.98b5ed9e_373cf779-42bd-476b-822a-5eecaa6704c5.webp)




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