Have look of high quality. However is not through hole type. Not clear in description
may I suggest the seller change the description to SCREW rather than NUT which I was then expecting a threaded through hole, and the M2, M3...M8 dimensions are for the internal threads. Hence I ordered wrongly. Otherwise the quality is superb and delivery was very fast.
I mistakinly thought these were going to be with the metric thread on the inside of the cylinder io the outside. Apart from the that the order is fine an arrived fast.