Wrong thread?
What does wrong thread mean - that the M14 x 1.5 was was wrong or the M12 x 1.5?
If the M14 that you received appears wrong, I would say you were shipped something other than M14 x 1.5.
Before I did anything, on Monday morning, I would be heading off to an industrial bolt shop that has a metric thread gauge and hopefully M12 and M14 cap screws.
Also bring in one of the Land Rover lug nuts and see what their gauge shows on both and then what size of cap screw threads into each of the lug nuts.
Since there is nothing in it for the bolt shop, be certain to appear suitably puzzled and in desperate need of their guidance - maybe Monday afternoon would be a better time to appear.
What does wrong thread mean - that the M14 x 1.5 was was wrong or the M12 x 1.5?
If the M14 that you received appears wrong, I would say you were shipped something other than M14 x 1.5.
Before I did anything, on Monday morning, I would be heading off to an industrial bolt shop that has a metric thread gauge and hopefully M12 and M14 cap screws.
Also bring in one of the Land Rover lug nuts and see what their gauge shows on both and then what size of cap screw threads into each of the lug nuts.
Since there is nothing in it for the bolt shop, be certain to appear suitably puzzled and in desperate need of their guidance - maybe Monday afternoon would be a better time to appear.