Leaf Spring Washer. Navistar 98647R1. Meritor 12251345, 7409615, 79799265. SPECS: AAGR Cross-Sectional Shape Style Rectangular AAUB Hole Diameter 4.719 inches minimum and 4.781 inches maximum ABMW Peripheral Shape Style Round ABMX Center Hole Shape Style Round ABNM Thickness 0.0598 inches nominal ADAV Overall Diameter 6.469 inches minimum and 6.531 inches maximum MATT Material Steel overall 14237 WRD18