ABOUT FLANGES

Look to www.woodcousa.com as "The Source."

Provided links give access to illustrations and/or additional information.  To return to this page use your browser back button.

Torque Values for API Spec 6A Integral Flanges Using Fluoropolymer Coated Bolts For Surface Applications

 

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.
 

The torque values shown in this table will apply 40,000 psi stress in the bolts.

Flange Size 13-5/8" 2M 13-5/8" 3M 16-3/4" 2M 21-1/4" 2M
Stud Diameter 1-1/4" 1-3/8" 1-1/2" 1-5/8"
Torque
Ft. Lbs.
421 563 733 934
  

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.



Email this page to a friend or colleague.
  
  Your Email Address:
  Your Colleague's Email:  
  

 


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
Click here to ask a question or get other information.