Bolted　joints　are　one　of　the　most　common　fastening　methods　in　engineering　applications.　To　meet　the　requirements　of　structural　parts,　the　torque　method　is　often　used　for　controlling　the　bolted　joint　performance.　However,　only　a　few　investigations　have　been　carried　out　on　the　conversion　efficiency　of　bolt　torque　to　the　tensile　force,　leading　to　uncertainty　and　potential　safety　hazards　during　the　bolt　tightening.　In　order　to　study　the　input　torque　distribution　and　overcome　problems　caused　by　the　Motosh　method　and　experimental　investigations,　a　new　energy-based　torque　distribution　model　is　established　in　the　present　study.　In　the　proposed　model,　numerous　affecting　parameters,　including　the　connector　compression　work,　effective　bearing　radius,　effective　thread　contact　radius,　and　spiral　angle　are　considered.　Then　a　parameterized　thread　mesh　model　using　finite　element　technology　is　proposed　to　analyze　the　influence　of　different　bolt　friction　coefficients　on　the　bolt　tightening　process.　Based　on　16　types　of　tightening　analyses,　it　is　concluded　that　as　bolt　friction　coefficient　increases,　the　corresponding　torque　conversion　rate　decreases　from　14.45%　to　7.89%.　Compared　with　the　Motosh　method,　the　torque　conversion　rate　obtained　by　the　proposed　method　is　relatively　large,　which　makes　the　actual　pre-tightening　force　larger　than　the　design　value.　However,　there　is　still　a　possibility　of　bolt　failure.