Bolt tightening torques    
   

Important: Shown are the bolt tightening sequences for typical circular flanges.
Do not fully tighten the bolts the first time around as this can tilt the flange out of parallel. The first time around tighten to approximately 1/2 of the final torque, then repeat the sequence, tightening to the suggested torque limit.



6 Bolts                    12 Bolts                             8 Bolts                  14 Bolts


10 Bolts                   16 Bolts

 

Suggested Seating Torques (foot lbs) for End Caps and Flanges
using Grade 8 Socket Head Cap Screws.

Inch 
Bolt Sizes

Seating Torque in foot lbs.

Metric
Bolt Sizes

Seating Torque
 in foot lbs.

3/8" - 16 48 M8 x 1.25 30
7/16" - 14 77 M10 x 1.5 56
1/2" - 13 118 M12 x 1.75 100
5/8" - 11 235 M16 x 2 241
3/4" - 10 420 M20 x 2.5 480
7/8" - 9 670 M24 x 3 810
1" - 8 1008 M30 x 3.5 1658
1-1/4" - 7 1600 M36 x 4 2840
1-1/2" - 6 2800 -- --

WEXCO High-Performance Bimetallic Injection and Extrusion Barrels

 

WEXCO Corporation
1015 Dillard Drive
P.O. Box 4297

Lynchburg, VA24502-0297
  U.S.A.

Telephone: 1-434-385-6006 
Toll free:    1- 800-999-3926 
(U.S.A. & Canada) 
Fax:            1-434-385-8387
E-mail: 
      
e-sales@wexco.com

© 2003 - 2008 WEXCO CORPORATION