Battery case flange bolts RF

  1. My model of MX-5 is: RF 2.0
  2. I’m based near: Essex
  3. I’m looking for technical help or recommendations on: Sourcing right sized flange bolts

Having just replaced my battery I noticed the flange bolts holding the battery case in place could be in better shape. Anybody know where I might source some?

Mx5 parts have some for the older models which look the same but not sure on size.