# List of symbols

Symbol | Name of the symbol | Unit |
---|---|---|

$C_1$ | coefficient $ C_1 $ | $\mathrm{}$ |

$C_2$ | coefficient $ C_2 $ | $\mathrm{}$ |

$C_3$ | coefficient $ C_3 $ | $\mathrm{}$ |

$C_4$ | coefficient $ C_4 $ | $\mathrm{}$ |

$D$ | diameter, larger diameter | $\mathrm{mm}$ |

$H$ | width, larger width | $\mathrm{mm}$ |

$K_{tg}$ | stress concentration factor with the nominal stress based on gross area | $\mathrm{ }$ |

$K_{tn}$ | stress concentration factor with the nominal stress based on net area | $\mathrm{ }$ |

$K_{ts}$ | stress concentration factor for shear stress | $\mathrm{ }$ |

$M$ | moment | $\mathrm{Nm}$ |

$P$ | load, force | $\mathrm{N}$ |

$T$ | torque | $\mathrm{Nm}$ |

$a$ | width of a notch or semimajor axis of an ellipse | $\mathrm{mm}$ |

$b$ | distance between notch centers or semiminor axis of an ellipse | $\mathrm{mm}$ |

$d$ | diameter | $\mathrm{mm}$ |

$d$ | width | $\mathrm{mm}$ |

$h$ | thickness | $\mathrm{mm}$ |

$r$ | radius of curvature of hole, arc, notch | $\mathrm{mm}$ |

$t$ | depth of groove, notch | $\mathrm{mm}$ |

$σ$ | normal stress | $\mathrm{MPa}$ |

$σ_{max}$ | maximum normal stress | $\mathrm{MPa}$ |

$σ_{nom}$ | nominal or reference normal stress | $\mathrm{MPa}$ |

$τ_{max}$ | maximum shear stress | $\mathrm{MPa}$ |

$τ_{nom}$ | nominal or reference shear stress | $\mathrm{MPa}$ |