**Contents**show

## What size wrench should you use on a 1/4 bolt?

US Bolt Head/Wrench Size

Bolt Diameter | Head and Wrench Size | |
---|---|---|

Hex Bolt – Lag Bolt – Square Bolt | Heavy Hex Bolt | |

1/4″ | 7/16″ or 3/8″ | – |

5/16″ | 1/2″ | – |

3/8″ | 9/16″ | – |

## Is the diameter of a bolt the same as the wrench size?

When ordering a bolt you will need to determine. bolt diameter, thread pitch, and bolt length. … Technician A says that the diameter of a bolt is the same as the wrench size used to remove or install the fastener.

## What size socket is my nut?

How to Determine the Right Size Socket for a Nut

- Turn on the digital caliper and set it to read in inches, not millimeters. …
- Close the caliper jaws until each jaw rests on one flat side of the nut on opposite sides.
- Check the caliper display. …
- Turn on the digital caliper and set it to read in millimeters, not inches.

## What size bolt uses a 14mm wrench?

Metric / Standard Wrench Conversion Chart

Bolt Diameter | Metric | Standard |
---|---|---|

5/16″ | 13mm | 1/2″ |

3/8″ | 14mm | 9/16″ |

7/16″ | 16mm | 5/8″ |

1/2″ | 19mm | 3/4″ |

## What size socket fits a M20 nut?

FLAT HEAD SOCKET CAP SCREW – METRIC

Size | Head Diameter | Hexagon Socket Size |
---|---|---|

M10-1.50 | 22.40 | 6.00 |

M12-1.75 | 26.88 | 8.00 |

M16-2.00 | 33.60 | 10.00 |

M20-2.50 | 40.32 | 12.00 |

## What size head does an M12 bolt have?

Metric Hex Bolt Dimensions

NOMINAL SIZE (D) | BODY DIAMETER | HEAD THICKNESS |
---|---|---|

m12 | 12.00 | 7.76 |

m14 | 14.00 | 9.09 |

m16 | 16.00 | 10.32 |

m20 | 20.00 | 12.88 |

## How do I know what size wrench I need?

Multiply the first number which is the bolt size in inches or millimeters, by 1.5 using a pocket calculator, if necessary. For example, for the numbers in Step 1, 1/2 x 1.5 = . 75 or 3/4, which is the wrench size needed for this standard-sized bolt.

## How do I know what size nut I need for a bolt?

To measure the diameter of screws and bolts, you measure the distance from the outer thread on one side to the outer thread on the other side. This is called the major diameter and will usually be the proper size of the bolt.

## What is the easiest way to identify the TPI?

Use the Teesing thread gauge to determine the pitch or the TPI. The pitch is indicated in metric thread in millimeters. Whitworth thread is indicated in the number of threads per inch. Locate the possible TPI or pitch by matching the diameter measured with the thread tables below.

## How do I know what size nut I have?

If the nut is metric, count the number of lines on the tape measure to find the measurement. If you count 9 lines, the size is a 9-mm (millimeter) nut. If the nut is US standard, count the smallest lines on the tape measure in sixteenths. Add the sixteenths together to find the size.

## What size bolt takes a 1/2 wrench?

Hex Bolt, Lag Bolt, Square Bolt and Heavy Hex Bolt

US Bolts | ||
---|---|---|

Bolt Diameter (in) | Head and Wrench Size (in) | |

7/16 | 5/8 | |

1/2 | 3/4 | 7/8 |

9/16 | 13/16 |

## How do I know my socket size?

How to Measure Socket Drive Size

- In the diagram above, the three key dimensions of a socket are labeled as Drive Hole, L, and S. …
- L indicates the overall socket length. …
- S indicates the target size of the nut, which determines which socket you’ll need. …
- The size of the drive hole is determined by usage and torque demand.

## Will a 9/16 fit a 14mm?

If a 9/16″ (14.2875mm) hex fits IN the 14mm axle hex socket, it will be very tight and won’t damage it. A 14mm (8.82/16″) socket does fit more snuggly ON a 9/16″ nut/bolt head.

## What is 12mm in standard?

SAE to Metric Conversion Chart

SAE | Metric | Inch |
---|---|---|

12mm | 0.472 | |

1/2″ | 0.5 | |

13mm | 0.512 | |

17/32″ | 0.531 |

## What is the next size wrench after 1 1 4?

Standard Combination Wrenches (1/4, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1)