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In all cases, the larger the

Table 1.

**number**, the larger the size. Consequently a #**8 screw**is larger than a #4**screw**, just as a 3 inch**bolt**is larger than a 2 inch**bolt**.Table 1.

Threads per Inch | Pitch (inches) | Pitch (mm) |
---|---|---|

9 | 0.1111 | 2.822 |

8 | 0.1250 | 3.175 |

7 | 0.1429 | 3.629 |

6 | 0.1667 | 4.233 |

Consequently, what size is a number 8 screw?

A #**8 screw size** is . 164 fraction of an inch.

Gauge or Diameter | Decimal (in) | mm |
---|---|---|

No.6 | 0.138 | 3.505 |

No.8 | 0.164 | 4.166 |

No.10 | 0.190 | 4.826 |

No.12 | 0.216 | 5.484 |

Hereof, is a #8 or #10 screw bigger?

**Screws** with a diameter smaller than 1/4" have a nominal size indicated by a number (e.g. #**8 or #10**). 1/4" and **larger** diameters are shown as inches. So, a 1/4-20 **screw** has a 1/4" diameter (. 250") with 20 threads per inch.

What do the numbers - such as **8-32** mean on a machine **screw**? The first number is the diameter. The bigger the number the bigger the **screw**. The second number is the number of threads per inch.