You mean you don't have a spanner! I don't either. (Brits call every wrench a spanner) Tighten with a large channel lock then tap it around another 10-20 deg with a screw driver and a small hammer, using the notches in nut....or tap it all the way around if no big channel. A pipe wrench with screw it up.

Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn