# 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 | $\mathrm{mm}$ |

$K_t$ | stress concentration factor | $\mathrm{ }$ |

$L$ | length or shoulder width | $\mathrm{mm}$ |

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

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

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

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

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

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