By:

**3-Hole and 6-hole Bolt Circle**

__________________________________________________

**4-hole bolt circle
( rotated 45**

**and 8-hole bolt circle**

**Or to check the hole spacing on a known bolt circle**

________________________________________

find a B.C.

check a B.C.

E ÷ .866

B.C. x .866 = E

find a B.C. |
check a B.C. |

E ÷ .707 |
B.C. x .707 = E |

find a B.C. |
check a B.C. |

E ÷ .588 |
B.C. x .588 = E |

find a B.C. |
check a B.C. |

E ÷ .500 |
B.C. x .500 = E |

find a B.C. |
check a B.C. |

E ÷ .383 |
B.C. x .383 = E |

find a B.C. |
check a B.C. |

E ÷ .309 |
B.C. x .309 = E |

find a B.C. |
check a B.C. |

E ÷ .259 |
B.C. x .259 = E |

Created: 06/16/2001

Last Rev: