**Contents**show

## What is the torque on a Grade 8 bolt?

Tightening Torque Guide for Grade 5 & 8 Hex Cap Screws

GRADE 5 | GRADE 8 | |
---|---|---|

Coarse Thread | Coarse Thread | |

5/16-24 (.3125) | 3675 | 5/16-24 (.3125) |

3/8-24 (.375) | 5588 | 3/8-24 (.375) |

7/16-20 (.4375) | 7575 | 7/16-20 (.4375) |

## What is the torque on a 5’8 stud?

In general, 1/2-inch studs typically have a torque range of 75 to 85 foot pounds; 9/16-inch studs range from 135 to 145 foot pounds; 5/8-inch studs run from 190 to 210 foot pounds.

## How much torque is needed to tighten a bolt?

Typical maximum recommended thightening torques for metric bolts

Size (mm) | Typical Maximum Tightening Torque (Nm) | |
---|---|---|

Property Class | ||

M8 | 28.8 | 41.3 |

M10 | 57.3 | 81.8 |

M12 | 99.8 | 143 |

## How do you find the torque specs on a bolt?

Begin with the formula T = K x U x D x P, where T is the torque, K is a standard representing 1.33, U is the coefficient of friction, D is the diameter of the fasteners, and P is the necessary preload.

## What is the torque for 5/8 Grade 8 bolt?

US Recommended Bolt Torque

Size | Recommended Torque | |
---|---|---|

Grade 2 | 18-8 S/S | |

5/8″ | 73 | 93 |

3/4″ | 125 | 128 |

7/8″ | 129 | 194 |

## What is a Grade 5 bolt?

Grade 5 Bolts and fasteners are made of medium strength carbon steel and are specified under the Society of Automotive Engineers (SAE). If your application calls for heavier materials, you may need Grade 8 Bolts because they are the hardest and are often used in heavy manufacturing applications.

## What is the torque settings for wheel nuts?

New wheels should be re-torqued after the first 50 to 100 driving miles.

Hardware Bolt or Stud Size | Typical Torque Range in Ft/Lbs | Minimum Number of Turns of Hardware Engagement |
---|---|---|

14 x 1.5 mm | 85 – 90 | 7.5 |

14 x 1.25 mm | 85 – 90 | 9 |

7/16 in. | 70 – 80 | 9 |

1/2 in. | 75 – 85 | 8 |

## What is the torque spec for beadlock wheels?

Tighten the bolts to the following torque specs: (using the criss-cross pattern) 12” and 14” HD Beadlock: 10ft/lbs. 8. Use tire mounting lube only on the tire/wheel opposite the beadlock (the inner bead) to ensure a proper seat for the tire.

## What do you torque Beadlocks to?

beadlock ring See Fig.

After each bolt is snug begin torqueing the bolts to 10ft/lbs. again in the star pattern until all bolts reach 10ft/lbs. 11. Once the bolts are at 10ft/lbs, go back through in a star pattern and torque them to 20ft/lbs.

## 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.

## How do I calculate torque?

To calculate load torque, multiply the force (F) by the distance away from the rotational axis, which is the radius of the pulley (r). If the mass of the load (blue box) is 20 Newtons, and the radius of the pulley is 5 cm away, then the required torque for the application is 20 N x 0.05 m = 1 Nm.

## How do you know if a bolt is tight enough?

Direct tension indicators are washers that have small protrusions on them. When the bolt is tightened, the gap between the unturned element and the washer decreases. The size of the gap is then measured and when it reaches the desired size, the bolt is pronounced tightened.

## How strong is a Grade 8 bolt?

The nominal size of the grade 8 bolts can be from 1/4″ to 1 1/2″. The minimum yield strength of this grade bolt is 130,000 psi. A maximum of 120,000 psi of tensile force (proof load) can be applied to grade 8 bolts.

## What are the torque specifications?

By definition, torque refers to the amount of rotational force at the point of application. When attaching a wheel to a vehicle, torque specifications are the amount of force recommended on the hardware to ensure proper installation. Following exact torque specifications matters for a number of reasons.