• How to use reference values
  • Approximate values for metric coarse threads VDI 2230
  • Approximate values for metric fine threads VDI 2230
  • Stud bolts with reduced shank
  • Tightening torques for plastic screws / Polyamide 6.6
  • Approximate values for austenitic stainless steel A1 / A2 / A4
  • Fasteners with internal drives and lower head shape
  • Flange screws and flange nuts
  • Reference values for tightening torque NORD-LOCK® washers wedge-locking system
  • High strength structural bolts

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Preload and tightening torques

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