Metric Recommended Bolt Torque
| Bolt Diameter (mm) | Recommended Torque (Nm) | Recommended Torque (Nm) |
| 10 | 55 | 75 |
| 12 | 100 | 135 |
| 14 | 160 | 215 |
| 16 | 245 | 335 |
| Bolt Diameter (mm) | Recommended Torque (Nm) | |
|---|---|---|
| Class 8.8 | Class 10.9 | |
| 10 | 55 | 75 |
| 12 | 100 | 135 |
| 14 | 160 | 215 |
What are the recommended torques for metric bolts?
Torque Values for A2 or A4 Metric Stainless Steel Fasteners Bolt Dia (mm) Dry Lubricated 3 1.0 0.9 8.9 in-lbs. 8.0 in-lbs. 4 2.6 2.3 23.0 20.7 5 5.1 4.6 45.1 40.6 6 8.7 7.8 77.0 69.3 8 21.2 19.1 188 169 10 42 38 372 335 12 73 66 54 ft-lbs. 48 ft-lbs. 14 118 106 87 78 16 180 162 133 119 18 258 232 190 171 20 370 333 273 246 22 485 437 358 322 24 ...
What is the maximum bolt torque?
Bolt Size TPI Tension (lbs) Tightening Torque Range (ft lbs) (Min - Max) Min Max Plain Lubricated; 1 ⁄ 2: 13: 15,000: 18,000: 125 - 150: 63 - 75: 5 ⁄ 8: 11: 24,000: 29,000: 250 - 302: 125 - 151: 3 ⁄ 4: 10: 35,000: 42,000: 438 - 525: 219 - 263: 7 ⁄ 8: 9: 49,000: 59,000: 715 - 860: 357 - 430: 1: 8: 64,000: 77,000: 1,067 - 1,283: 533 - 642: 1 1 ⁄ 8: 7: 80,000: 96,000: 1,500 - 1,800: 750 - 900: 1 1 ⁄ 4: 7: 102,000: 122,000: 2,125 - 2,542
How to measure the torque on bolts?
The torque value of a bolt can be checked in 3 ways:
- The movement check:
- The loosening check:
- The marking check:
What is the appropriate torque for lug bolts?
The job is straightforward, you just need to follow these steps:
- Loosen all wheel screws.
- Adjust the hand click-type torque wrenches to your desired torque value.
- Turn each lug nut in turn until you hear a click. Note the following diagram (X pattern) depending on the number of screws on the wheel. ...
- After pulling all the lug nuts, switch to the remaining wheels.
How much torque does a M12 bolt need?
Typical maximum recommended thightening torques for metric bolts.Size (mm)Typical Maximum Tightening Torque (Nm)Property ClassM828.841.3M1057.381.8M1299.81437 more rows
What is the torque on a 10 mm bolt?
For bolts with a 10mm Thread Diameter: 25Nm.
How much torque does a bolt need?
Recommended bolt torques.Size (in)Torque (lbf ft)SAE Grade 218-8 S/S1/447.85/16811.83/815228 more rows
How is bolt torque calculated?
The basic formula T = K x D x P stated earlier takes these factors into account and provides users with a starting point for establishing an initial target tightening torque.
Where do I find torque specs?
The torque specs for the axle nut (and other nuts and bolts) should be listed in the dealership/shop guide provided by the manufacturer. If you can't find that information, or if you don't have a guide, you can find the specs in the service manual.
How do you determine torque?
Mark the tightened fastener and surrounding application. In the tightening direction, begin to slowly apply force to the tool until the first movement in the fastener is noted. The reading recorded is a good indication of the original torque applied to the joint. This is the best way to determine residual torque.
What happens if you over torque a bolt?
Typically, an under torqued bolt will deform and be unable to provide as much clamping force as needed. An over torqued bolt will break.
How do you calculate bolt load?
The tensile load a fastener can withstand is determined by the formula P = St x As. To find the tensile strength of a particular bolt, you will need to refer to Mechanical Properties of Externally Threaded Fasteners chart in the Fastenal Technical Reference Guide.
How do you read a bolt torque chart?
0:344:13Engine Bolt Torque Chart - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd you can see over here we have grade 5 that means there's these three dashes right there we'll goMoreAnd you can see over here we have grade 5 that means there's these three dashes right there we'll go down to where it says 3/8. And then it has a dash. And then 16. So 3/8 is your bolt.
What is the torque for a 14mm bolt?
Metric Recommended Bolt TorqueBolt Diameter (mm)Recommended Torque (Nm)Class 8.8Class 10.91210013514160215162453355 more rows
How do you manually measure torque?
0:562:45How to torque without a torque wrench - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou need your arm in a way to measure the exact amount of distance. From the component. And then youMoreYou need your arm in a way to measure the exact amount of distance. From the component. And then you also need a way to measure the amount of force exerted.
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.
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Citation
Engineering ToolBox, (2018). Metric Bolts - Tightening Torques. [online] Available at: https://www.engineeringtoolbox.com/metric-bolts-maximum-torque-d_2054.html [Accessed Day Mo. Year].
