**Contents**show

## What is the torque for a 12 mm bolt?

Metric Recommended Bolt Torque

Bolt Diameter (mm) | Recommended Torque (Nm) | |
---|---|---|

Class 8.8 | Class 10.9 | |

12 | 100 | 135 |

14 | 160 | 215 |

16 | 245 | 335 |

## How much torque do you need for a bolt?

The first factor is the bolt’s diameter. It takes more force to tighten a 3/4-10 bolt than to tighten a 318-16 bolt because it is larger in diameter.

…

What is the Proper Torque to Use on a Given Bolt. by Joe Greenslade.

Product: 3/4-10 Grade 5 zinc plated bolt | |
---|---|

• P= | 23.046 pounds |

## How do I know how much torque I need?

Torque is defined the length of the lever arm multiplied by the force applied. For instance, if you have a two-foot long bar and you hang a 10-pound weight from it, you have 20 foot/pounds of torque.

## What size bolt has a 12mm head?

Metric Shoulder Bolt Dimensions

Shoulder Diameter (A) | Thread (C) | Head Diameter (E) |
---|---|---|

8mm | 6mm x 1.0 | 13mm |

10mm | 8mm x 1.25 | 16mm |

12mm | 10mm x 1.5 | 18mm |

16mm | 12mm x 1.75 | 24mm |

## How much torque does a M3 screw need?

Torque Specifications

Size | Min | Max |
---|---|---|

M3 | 10 | 1.4 |

M4 | 23 | 3.2 |

M5 | 46 | 6.3 |

M6 | 79 | 10.9 |

## Does bolt length affect torque?

Tightening torque is not influenced by the bolt length so easy to standardize. The Bolt efficiency will be low due to wide tolerance of the tension.

## Why do you torque a bolt?

Torque is used to create tension. Bolts are used to affix two components so that they can resist tensile (pulling apart) and shearing (sliding apart) forces. After the nut has been turned onto the bolt, additional torque causes the nut to turn and stretch the bolt.

## What torque wrench should I buy?

The bigger the drive and the longer the handle, the more torque they can deliver. Most home mechanics will find that a torque wrench with a 1/2-inch drive and at least an 18-inch handle is the best choice for lug nuts, cylinder heads, suspension bushings, and other likely uses.

## What is considered good torque in a car?

Both horsepower and torque are measured to give shoppers a sense of the performance they might expect from their vehicle. Engines in mainstream cars and trucks typically generate 100 to 400 lb. -ft of torque.

## How much torque is too much?

Most 2WD road cars – even with large grippy tires – can’t handle more than 400-500 lb/ft of torque. AWD cars can handle as much as 600 lb/ft without losing traction.

## How do you determine tight torque?

” The best way to determine correct torque is through experimentation under actual assembly conditions. “

- Turn-of-the-Nut. Specific Tension can be accurately reflected in the number of rotations a fastener needs to bring the parts of an assembly together.
- Direct Tension Indicator.

## What’s the unit for torque?

Unit of torque: newton metre (N m)

The quantity torque (or moment of force) may be thought of as the cross product of force and distance and the SI unit for torque is Newton metre, N m (m^{2} kg s^{–}^{2}).

## What is the tightening torque?

Friction Points and the Importance of Lubrication

Friction points are where the torque is lost due to friction. This is more easily understood as the touching threads between a nut and a bolt and whatever material the bolt is clamping.