Re: Longer wheel studs
The 528 is a METRIC with .650 knurl and 1 3/4 under head length (UHL).... The 379 is 1/2-20 with a .620 knurl and UHL of 1-15/16 length BUT it has about 1/4" that is NOT threaded so one or both may not be long enough for your needs .....THE 138s you have now have UHL of 1-17/32 (1-1/2")
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