I am in search of the Yakima grub screw posts for the factory Whispbar style roof rack. These are the 4 threaded posts that go into the fixed mounting points on the body under the drip rails. I contacted Mazda directly and they told me they are not available separately. I'm sure I can grab an identical grub screw at a specialty hardware store but I need to know the size, length and thread pitch for them. Does anyone have any idea? OR does anyone happen to have an extra set by chance?
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