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5/8"-18 x 3" Grade 8 Fully Threaded Bolts• Threads are rolled for maximum strength• Thin .200" hex head provides additional clearance• Length is measured from underneath the head of the bolt• 7/8" wrench size.0625" Hardened Washers• Prevents galling• Ensures hex remains true to backside of axle flange.687" O.D. x .875" Stud Sleeves• Provides proper diameter, & surface to pilot wheel• Internal 5/8"-18 threads to secure stud and prevent movement• Notched for installationSleeve Installation Wrench• Fits notch on sleeve to simplify installation.438" Wide Aluminum Washers• Reduces marring on wheel face from flanged lug nut• Keeps lug nut from bottoming-out on stud sleeve5/8"-18 Flanged Lug Nuts• Provides secure clamping force• 15/16" wrench sizeRotor Hat, & Wheel Thickness Determines Proper Washer Width• Sleeve length should exceed combination but not beyond washer• Additional sleeves are available - A1027CWith Other Width Washers.250" - A1027S.688"- A1027LKits With Integral ShanksA1036 / A1037 / A1037MD / A1038 / A1039 / A1041