PREVAILING TORQUE METRIC HEX LOCK NUT (WITH METAL INSERT) DIMENSIONS

"Prevailing Torque Metric Hex Lock Nut (with Metal Insert) Dimensions" Calculator has been developed to show dimensions of prevailing torque metric hex lock nuts with metal insert according to the ISO standards.

Some important notes from the ISO standards:

- ISO 7042 specifies the characteristics of prevailing torque type all-metal hexagon nuts, style 2, with threads from M5 up to and including M36, with product grade A for threads d ≤ M16 and product grade B for threads d > M16.

- Mechanical properties of ISO 7042 hex lock nuts: Steel - Property class 5, 8, 10 and 12.

- ISO 7719 specifies the characteristics of prevailing torque type all-metal hexagon nuts, of style 1, with threads from M5 up to and including M36, with product grade A for threads d ≤ M16 and product grade B for threads d > M16.

- Mechanical properties of ISO 7719 hex lock nuts: Steel - Property class 5, 8 and 10.

- ISO 7720 specifies the characteristics of prevailing torque type all-metal hexagon nuts, of style 2, with threads from M5 up to and including M36, with product grade A for threads d ≤ M16 and product grade B for threads d > M16.

- Mechanical properties of ISO 7720 hex lock nuts: Steel - Property class 9.

- ISO 10513 specifies the characteristics of prevailing torque type all-metal hexagon nuts, of style 2, with metric fine pitch thread, with nominal thread diameters d from 8 mm up to and including 36 mm, with product grade A for threads d ≤ M16 and product grade B for threads d > M16.

- Mechanical properties of ISO 10513 hex lock nuts: Steel - Property class 8, 10 and 12.


Calculator:

INPUT PARAMETERS
Nominal metric hex lock nut size

 


Dimensions of Metric Hex Lock Nuts (Metal Insert)
Metric Nut Dimensions 
Size Product
Grade
Standard Thread
Series
Pitch da dw e h mw s
max min min min max min min max min
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Note 1: Dimensions are in mm.
Note 2: Requirements for electroplating are covered in ISO 4042 for steel nuts
Note 3: Non-preferred threads according to ISO standards: M14 and M22.
Note 4: Nut material : steel.
Note 5: Thread Tolerance : 6H.
Note 6: mw: Minimum wrenching height.


Definitions:

Product Grade A, Grade B and Grade C: The product grades refer to the size of the tolerances where grade A is the most precise and grade C is the least precise as defined in the ISO 4759-1:2000 standard.


Supplements:



Link Usage
Metric Thread Size and Tolerance Calculator Calculates basic major, minor and pitch diameters of the metric external (bolt) thread and internal (nut) thread according to ISO 724:1993 standard. In addition to basic size calculations, tolerance calculations of different tolerance classes can be done according to ISO 965-1:1998 and ISO 965-2:1998 standards.
Nut Grades, Identification Markings and Strength (Metric) Shows proof strength and Vickers and Brinell hardness values of metric nuts made of carbon steel and alloy steel.
Prevailing Torque Values of Lock Nuts (Metric) Shows prevailing-on torque and prevailing-off torque values of metric lock nuts.

Reference:
  • ISO 7042:1997, Prevailing torque type all-metal hexagon nuts, style 2 — Property classes 5, 8, 10 and 12
  • ISO 7719:1997, Prevailing torque type all-metal hexagon nuts, style 1 — Property classes 5, 8 and 10
  • ISO 7720:1997, Prevailing torque type all-metal hexagon nuts, style 2 — Property class 9
  • ISO 10513:1997, Prevailing torque type all-metal hexagon nuts, with metric fine pitch thread — Property classes 8, 10 and 12
  • ISO 4759-1:2000, Hexagon nuts — Bolts, screws, studs and nuts — Product grades A, B and C