fastener and nut 1.to faster and joint stamping die part 2. ... Machinery Co., Ltd. Products precision mould parts, standard and customized punches, guide pins, guide bushings, ejector pins ... sleeves, die inserts,carbide pins, die casting part and components,locking blocks Applied in automobile die, precision ... Plus or Minus tolerances.2. Type of material and hardness needed.3. Part application.4. Target ...