Din 76a Pdf -

DIN 76-1:2004-06 THREAD RUN-OUTS AND THREAD UNDERCUTS - PART 1: FOR I. DIN 76-1 - 2016-08

: Clearly call out "Undercut DIN 76-A" on your 2D manufacturing prints. This tells the machine shop exactly what standard tool geometry to use, saving space on the blueprint from manual dimensioning. Conclusion din 76a pdf

Official, up-to-date versions of these standards can be purchased and downloaded through: DIN 76-1:2004-06 THREAD RUN-OUTS AND THREAD UNDERCUTS -

Released under the full title "Design of thread run-outs and thread undercuts for metric ISO threads according to DIN 13," this standard defines the geometric shapes, dimensions, and tolerances for: specifically covers ISO metric threads as defined in

: Form A is used for external threads to provide a "relief" groove where the thread ends. This allows a mating part to be screwed flush against a bearing surface.

DIN 76 is a multi-part standard. specifically covers ISO metric threads as defined in DIN 13-1 (coarse pitch threads from 1 mm to 68 mm nominal diameter) and DIN ISO 261. Additional parts address other thread types:

When creating a 2D technical drawing in AutoCAD, SolidWorks, or PTC Creo, you do not need to manually draw every single dimension of the undercut if you reference the standard properly. Standard Notation