An angle adjustable connecting part for farm equipment and hand tools easily detaches from a working part of farm equipment and a hand tool from a sack. A connecting part is formed on the front end of a working part of farm equipment or hand tool. A connecting part is also formed on the front end of a sack, thereby coupling the working part and the sack. The connecting part has a fixing hole formed in the center thereof, and multiple angle adjusting holes are formed concentrically outward. A fixing hole is formed at the center outward from the connecting part. A fixing plate has a fixing protrusion inserted into the angle adjusting hole. When a fixing screw is fixed to the fixing plate and the fixing hole of the connecting part, the fixing protrusion of the fixing plate is fixed to an angle adjusting hole of the connecting part.