QA1 HFR3 H Series 3 Piece Alloy Rod End 3/16in. Bore 10-32 RH Female ThreadQA1 HFR3 H Series 3 Piece Alloy Rod End 3 16in. Bore 10 32 RH Female Thread QA1's HF Series alloy chromoly female rod ends are constructed using a traditional three piece design. HF Series precision rod ends have a higher ball to race conformity, which creates tighter tolerances. This makes them ideal for precision applications where tight tolerances critical. These rod ends are heat treated and are available in right or left hand threads. Grease