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Torque values
shown assume undamaged bolts, clean conditions and smooth bearing
surfaces.
The torque values shown in this table
will apply 50% yield tension in the bolts.
| Stud Diameter |
5/8" |
3/4" |
7/8" |
1" |
1-1/8" |
1-1/4"
* |
1-3/8"
* |
1-1/2"
* |
1-5/8"
* |
1-3/4" |
1-7/8" |
Torque
Ft. Lbs. |
68 |
118 |
188 |
279 |
401 |
553 |
739 |
962 |
1,226 |
1,534 |
1,890 |
| Stud Diameter |
2" |
2-1/4" |
2-1/2" |
2-5/8" |
2-3/4" |
3" |
3-1/4" |
3-3/4" |
3-7/8" |
4" |
Torque
Ft. Lbs.
|
2.297 |
3,276 |
4,500 |
4,716 |
5,424 |
7,047 |
8,965 |
13,782 |
15,208 |
16,730 |
| * |
Certain API Spec. 6A
flanges have stress limits that necessitate lower than normal
torque values for bolts used in these flanges. Use the chart
below for these flanges.
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The torque values
shown in this table will apply 40,000 psi stress in the bolts. |
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For Torque Values for 17D and 6BX Flange
Bolts
for Subsea Application, Click Here.
For Torque Values for WOODCO
USA Clamps for API 16A Hubs, Click Here.
For a Flange Gasket, Bolt and Torque
Reference Chart, Click Here.
For Flange Bolt Tightening
Sequence, Click Here.
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Information above, and in other
parts of this Web Site, may help persons who really seek to know. If you
have a question, and you think WOODCO USA may have the capacity to answer
it, please use our
Contact Us link and give us a
chance to help.
WOODCO USA
provides Web Site Tools for identification, estimating, and reference only. Do
not use this information for manufacturing or inspection. Users of these tools
should not use them as a substitute for professional engineering advice.
Anyone making use of the information presented does so at his own risk and
assumes any and all liability resulting from such use.
FOR FURTHER INFORMATION, OR TO LEARN MORE ABOUT WOODCO
USA PRODUCTS AND SERVICES,
CONTACT:
WOODCO USA
P.O. Box 1261
Houston, Texas 77251-1261
Phone: 713-672-9491
USA and Canada: 1-800-496-6326
Fax: 713-672-8768
www.woodcousa.com
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