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What Diameter are the Mounting Holes in the TruRyde TRU77FR?  


what is the diameter of bolt that fits the flange holes?


Expert Reply:

I had the bolt holes on the TruRyde #84 E-Z Lube Spindle w/ Brake Flange for 3,500-lb Trailer Axles # TRU77FR measured, and they are .488", or just under 1/2". This size corresponds with the bolts that typically come pre-installed on 10" brakes, like the Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs # AKEBRK-35-SA. The 7/16" Mounting Hardware for 10" Brake Assemblies # BRKH10B would then secure the brakes to the # TRU77FR.

Just to make sure, I had the full bolt pattern measured as well, and it will be the standard 2 7/8" going center to center from one hole to the next. This will also match the bolt pattern on the # AKEBRK-35-SA.

expert reply by:
Lazer S

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