I've got a Sears Craftsman (Murray) 30" riding mower. Per the manual the replacement blade is a 56060HT.
Searching for this model online I'm getting many hits plus more that cross reference a newer series. Then comes the confusion factor as these blades often have different center hole sizes, .850", 7/8"x1" and 27/32. Even the original blade depending upon website may list any one of the three.
Are all three sizes truly interchangeable?
My experience with a (Troy-Bilt) mower was that manufacturers and vendors use different part numbers. The only way to match a replacement part is to take the old unit to the store.
Problem I'm seeing is the exact same part number shown as having different center hole sizes.
Yes, they are: Considering tolerances, they are all the same size.
7/8 = .875 27/32 = 0.84375 where 0.850 is the manufacturer's nominal, most likely.The "play" I've seen in most blades is in the order of 0.100, so those all easily fit within that. The 27/32 would be the closest, ignoring tolerances.
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