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W N 8

Software for Calculation of Serration Splines

(C) Copyright 2005-2022 by HEXAGON Software, Berlin

WN8 Software for Calculation of Serration Splines to DIN 5481

WN8 calculates dimensions and load bearing capacity of serrations with straight flanks according to DIN 5481. A true-scale drawing of the spline is generated by WN8 and may be exported as CAD file. Material data are loaded from the integrated material database.


In Pre-Dimension, WN8 calculates a suitable spline size for the required transferable torque.


Standard sizes to DIN 5481 may be selected from integrated database. Or you can enter dimensions for self-defined serration splines.

Material database

Integrated material database includes strength values for the most common steeel materials, and may be extended by the user.

Load Capacity

Safety against bearable flank pressure is calculated according to Niemann (Maschinenelemente Band 1, 2005)

Quick View

Profile drawing and tables with most important dimensions and results on one screen.


Calculation results may be printed, saved as HTML table, or directly exported to MS-Excel.

Tables and Drawings

WN8 generates true-scale drawing of shaft and hub profile which may be exported to CAD by DXF or IGES file. Tables with dimensions and tolerances are also generated by WN8.

Production Drawing

WN8 generates a production drawing with tooth profile and dimensions for external spline (shaft) and internal spline (hub). Drawing information and modification index is entered in WN8.

HEXAGON-Help System

Auxiliary text and images are available for all dialogue windows. If error messages occur, you can get description and remedy suggestion.


All drawings and diagrams can be saved as DXF or IGES file to be loaded with CAD programs.

The OLE interface lets you import/export data from/to Excel.

Export Formats


Import Formats

TXT, DBF, Excel, WN8.

System Requirements

WN8 is available as 32-bit and 64-bit application for Windows 11, Windows 10, Windows 8, Windows 7.

Download WN8 Demo for Windows (657 kB)

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