Shopping for MRBF Terminal Fuse Blocks to mount on my SOK batteries. The battery posts have M8 bolts (about 0.310 OD at the threads), but the MRBF fuse blocks I have come across have a mounting hole of 3/8" (0.375). Knowing that there should be as much material as possible at this connection is this acceptable or is there a smaller size fuse block mounting hole and I just haven't found it?
