On PG1000, PG1500, PG2000 reels: Used in conjunction with the 15N-2000CV newer handle (this is the only time the new handle is used with the old screw, to make the handle work with the PG reels).
On the CV500 reel: If you are replacing the original 15-500CV handle, you will also need the 233N-500CV bearing cover with attached screw and 233A-500CV handle washer. The original 233-500CV used the separate 15B-500CV screw, which is not compatible with the newer handle. Make sure that the 15A-500CV handle retaining bushing is not also missing.
On the CV2000 reel: If you are replacing the original 15-2000CV handle, you will also need the 233N-2000CV bearing cover with attached screw and 233A-2000CV handle washer. The original 233-2000CV used the separate 15B-500CV screw, which is not compatible with the newer handle. Make sure that the 15A-500CV handle retaining bushing is not also missing.
On the CV4000 reel: If you are replacing the original 15-4000CV handle, you will also need the 233N-2000CV bearing cover with attached screw and 233A-2000CV handle washer. The original 233-2000CV used the separate 15B-500CV screw, which is not compatible with the newer handle. Make sure that the 15A-500CV handle retaining bushing is not also missing.