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Speaker 1: Today, we're going to take a look at the four bolt trailer brake mounting flange for eight thousand pound axles, with the three and a half inch diameter axles. Now, this brake mounting flange is for three and a half inch round axles, which are normally on the eight thousand pound axles. This brake mount flange is what'll get wielded to the end of your axle and it provides the secure mounting place for the brake assemblies that use a four bolt mounting pattern. This is designed for use with the 12 and a quarter inch brake assemblies. A few dimensions on this, if you notice at the very top it has a four point five o stamp or part number on it. What that means is it's a four on five inch bolt pattern and what they're measuring is the diagonal measurement.
So, from the center of this hole to the center of this hole is five inches.So, if we turn it and put the ruler on it, there's your five inch. So, four holes, five inch bolt pattern. The hole inside diameter, the large hole is right at three inches and it does have the four mounting holes and if we measure these with the part number up at the top, if we measure it across this way, center to center it's going to be right at three and seven-sixteenths of an inch and if we go up center to center it's going to be right at three and a five-eighths and the thickness on this part it's all steel, it is right at three-eighths inch thick but that should do it for the review on the four bolt trailer brake mounting flange for an eight thousand pound axles with the three and a half inch diameter axles.
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