4mm x 0.7mm Metric K-nut.
The PH135 Metric 6 point K-Nuts (Jetnut) have an integral flange and are also lightweight and self locking, ideal for difficult to reach or confined spaces as the hex is smaller and shorter than a standard sized hex nut. It achieves its locking action by using an elliptical offset. Cadmium plated for high corrosion resistance.
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