These threaded bars should be fitted before dropping the tap through the hole in the basin. Only do them up as tight as you can by hand. If you use pliers or grips there is a danger you will damage the thread.

Once the tap is in the hole with the flat washer or mounting plate placed over the threaded bars, the steel washer can be slid into place also. The larger two of these holes are for the feed pipes to be screwed in and the smaller two are where the threaded connection bars are screwed into.

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It is slid over the thread and the other end twisted tight by putting a nail or something similar into the hole and turning. Easy! With the washer in place the nuts can now be tightened onto the threaded bar and this is where the DIY enthusiast struggles. Use a Box Spanner The image above shows the tap at the top with the connection tails at the bottom ready to receive the hot and cold feeds. The 10mm feed pipes screw into the underside of the tap and are then machined out to become 15mm copper tails ready for the connection of 15mm feeds.

There is hardly any room under the basin, less under a bath and a kitchen sink is a nightmare! Plumbers on the other hand, carry a box spanner which is a long open tube with the correct size nut shaped hole at the end.