Sintered bronze per mil-b-56878 type 1, compa impregnated with oil per mil-l-7808; splined outer periphery 2.078 in. Min, 2.083 in. Max major dia; 0.043 in. Min, 0.047 in. Max thk; 1.760 in. Min, 1.780 in. Max diameter centrally located hole; radial grooves on both bearing surfaces