Power Lock(R) AS Series Shaft Dia 3.4375 In -0.0021 In Shaft Dia Tolerance Outside Dia 5.118 In +0.0021 In Outside Dia Tolerance Overall Length 1.102 In Hub Contact Pressure 17920 PSI Locking Bolt Quantity 12 M10 X 25 Bolt Size Withstand Temp -22 - 400 Deg F Carbon Steel Material