For Hunter BL Series (BL 500 501 504 505) Brake Lathe. Type:Brake Lathe Feed Nut. This feed nut is used for both the rotor feed and also as the boring bar feed (each machine uses 2 of them). Repalce OEM Hunter Part: 76-335-2 (use with 97-388-2 (Crossfeed Screw)).