This is bolt size 18,length from 25mm to 400mm.Full or half teeth can be produced.
Bolt M18, one specification of screw, pitch 2.50mm, the maximum outer diameter of finished product is 17.95mm, the minimum is 17.71mm, and the wire diameter is 16.2 ± 0.02mm.
Bolt: mechanical part, cylindrical threaded fastener with nut. A type of fastener consisting of head and screw (cylinder with external thread), which needs to be matched with nut for fastening and connecting two parts with through hole. This kind of connection is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection belongs to the detachable connection.