Din 76a Pdf [top] -

Without a proper undercut according to DIN 76, a nut might not be able to sit flush against the bearing surface of a bolt. The undercut provides a "clearance" zone where the cutting tool exits the workpiece, ensuring:

Because of the high demand for a , we must address the legitimate channels. As of this writing, the current version is DIN 76-1:2016-12 (covering external threads) and DIN 76-2 for internal threads. din 76a pdf

DIN 76-1 is the current version that has replaced the older DIN 76A . The technical data is identical for standard metric threads. Without a proper undercut according to DIN 76,

| Pitch ( P ) (mm) | Width ( b ) (mm) | |--------------------|--------------------| | 0.2 – 0.5 | 0.5 – 1.0 | | 0.6 – 1.0 | 1.0 – 1.6 | | 1.25 – 1.75 | 1.6 – 2.5 | | 2.0 – 3.0 | 3.0 – 4.0 | | 3.5 – 5.0 | 5.0 – 6.0 | DIN 76-1 is the current version that has

DIN 76-1 is the German standard that specifies dimensions for and thread undercuts for ISO metric threads. It ensures that when a bolt is tightened into a tapped hole, it doesn’t bottom out or experience stress concentrations due to the transition between the threaded and unthreaded portion of the shank. Key Forms of DIN 76

is a German industrial standard (Deutsches Institut für Normung) that specifies the design of thread run-outs and thread undercuts for metric ISO threads according to DIN 13.