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ISO Metric fine threads – DIN 13 (Thread limits) Nominal thread-Ø Gra-dient P Screw with tolerance of 6g Nut screw with tolerance of 6H Ø major d Ø pitch d 2 Ø minor d 1 Ø major D Ø pitch D Ø minor D max. min. max. min. max. min. min. max. min. max. min. max. M5 0.5 4.980 4.874 4.655 4.580 4.367 4.273 5.000 Not specified 4.675 4.775 4. ...
ISO METRIC THREADS - DIN 13 (thread limits) P (mm) Screw with tolerance of 6g Nut screw with tolerance of 6H Ø major d Ø pitch d2 Ø minor d1 Ø major D Ø pitch D2 Ø minor D1 max. min. max. min. max. min. min. max. min. max. min. max. M3 0.5 2.980 2.874 2.655 2.580 2.367 2.273 3.000 2.675 2.775 2.459 2.599
The metric steel / metal threads specified in this catalog are based on these tolerance fields. For threads with surface or heat treatment (e.g. sandblasting, powder coating, zinc plating, tempering, etc.), it may not be
The basic dimensions are nominal dimensions of a metric thread profile without allowance and tolerances (The thread class defines that). They are based on standard ISO 68-1. The basic dimensions can be used for design.
DIN. : 13 Part 13/20. Metric (ISO) screw thread, coarse series -M- Basic profile and limiting profiles. The bold lines indicate the maximum material profiles. The maximum material profile of the internal thread is the basic profile. = basic major diameter. = pitch. e series, fit 6H. = major diameter. = minor diameter external thread.
ISO Metric Fine Thread DIN 13-2. Compared to standard threads, a fine thread has a smaller pitch which increases the resilience. It is used e.g. for adjusting screws in measuring instruments because it allows for finer settings. The term consists of the letter M, the nominal diameter and the pitch, the flank angle is 60°.
The metric ISO standard thread is standardized according to the DIN 13-1 standard, which covers standard threads with an outer diameter of 1 to 68 mm. This standard was first defined back in 1949, but has been revised and updated many times since then.
