Roller Thrust Bearing Washer, Bore Diameter 2 1/4 in, Compatible Bearing 3648, For Thrust Bearing Type Needle Roller, Lubrication Type Lubrication Required, Maximum Temperature 225 Degrees F, Minimum Temperature -5 Degrees F, Outside Diameter 3 in, Self Lubricating Bearing No, System of Measurement Inch, Washer Thickness 1/8 in, Maximum PV Not Applicable, Series TR, Washer Material Alloy Steel, Washer Material Grade AISI 52100