Nord-Lock Bolt Securing System

Torque guidelines

All figures are based on tests with calibrated torque transmitters and load cells performed in our laboratory.


We provide guidelines for the following bolt types:

For guidelines in foot pound [ftlbs] please consult this PDF file with UNC standard (133 kB).



Torque calculator

The NORD-LOCK torque calculator (114 kB) is designed to make torque calculations when using NORD-LOCK washers.


Should you have any questions regarding these guidelines or any specific circumstances in your application, please contact MARYLAND METRICS .



Phones: (800) 638-1830 or (410) 358-3130 are available Monday-Friday 8:30 AM to 5:30 PM Eastern time.
Faxes: (800) 872-9329 or (410) 358-3142 & E-mail are available anytime.
Warehouse & showroom hours are Monday-Friday 10 AM to 5:30 PM.
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