# List of symbols

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

$ $ | bolt | $\mathrm{ }$ |

$A_b$ | cross‐sectional area of the bolts | $\mathrm{mm^2}$ |

$D$ | basic major diameter of internal thread (nominal diameter) | $\mathrm{mm}$ |

$D_1$ | basic minor diameter of internal thread | $\mathrm{mm}$ |

$D_2$ | basic pitch diameter of internal thread | $\mathrm{mm}$ |

$H$ | height of fundamental triangle | $\mathrm{mm}$ |

$P$ | pitch | $\mathrm{mm}$ |

$d$ | basic major diameter of external thread (nominal diameter) | $\mathrm{mm}$ |

$d_1$ | basic minor diameter of external thread | $\mathrm{mm}$ |

$d_2$ | basic pitch diameter of external thread | $\mathrm{mm}$ |

$d_3$ | basic smaller diameter of external thread | $\mathrm{mm}$ |