Hexagonal counter nut - Riegler K1686

Hexagonal counter nut. This range covers 20 variants from 0.47 EUR. Select the version you need above.

Available variants

Shared technical data

About Lock nuts

Lock nuts secure screw-in fittings in the required angular position and keep the joint there, vibration included. The group spans female threads from G 1/8 to G 2 plus metric sizes such as M24x2, M42x2 and M49x2. Maximum working pressure of the joints is 20 to 25 bar.

What matters when choosing

• Thread: from G 1/8 female up to G 2 female, plus M24x2, M42x2 and M49x2. What counts is the thread of the screw-in part, not the nominal width of the line.
• Thread standard: part of the range follows DIN EN ISO 228-1, that is parallel pipe thread. It has to match the mating part so that sealing happens at the face and not in the thread.
• Material: brass CW614N, plain or electroplated nickel. Nickel-plated is the choice where appearance or corrosion protection in damp surroundings matters.
• Max. working pressure 20 to 25 bar and operating temperature up to 150 °C: both limits apply to the assembled joint and should be checked against the design point.
• Across-flats size decides whether the nut can still be reached with an open-ended spanner in the planned installation.

Typical applications

• Locking screw-in fittings on cylinders, valves and manifolds
• Fixing bulkhead passages in vessel, enclosure and cabinet walls
• Aligning pressure gauges and test ports that need a defined reading direction
• Mounting air service units and accessories on brackets and support plates
• Maintenance work where a loosened fitting is re-secured without rebuilding the line

Most of the 50 items are made from brass CW614N, plain or electroplated nickel, and part of the threads follow DIN EN ISO 228-1. Manufacturing takes place in Greece, Turkey and China.