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Stud elongation and torque calculations

Metric Bolt Loads SAE Bolt Loads
Material Standard 1.1181 ASTM A320 Grade L7
ISO R898 Grade 4.6 ASTM A320 Class L7 Grade M
ISO R898 Grade 5.6 ASTM A449 Stud
ISO R898 Grade 8.8 ASTM A193 Grade B7M
ISO R898 Grade 10.9 ASTM A193 Grade B7 Stud
ISO R898 Grade 12.9 ASTM A193 Grade B16
Material Standard 1.4541 Min Yield 210 Mpa SAE J429 Grade 8 Stud
Material Standard 1.4541 Min Yield 450 Mpa ASTM A490 Stud
Material Standard 1.4541 Min Yield 600 Mpa ISO R898 Grade 8.8 Stud
Material Standard 1.4913 ISO R898 Grade 10.9 Stud
Material Standard 1.4923 ISO R898 Grade 12.9 Stud
Material Standard 1.4986  
Material Standard 1.7258  
Material Standard 1.7709  
Material Standard 1.7711  

Please note.  If you wish to print any of the above forms, be *SURE* to select "landscape" in your printer preferences.  Otherwise, the form will print on two pages.

                           

                                                       Updated as of July 6, 2010