NA 067

DIN Standards Committee Fasteners


Fasteners - Bolts, screws, studs and nuts - Symbols and descriptions of dimensions (ISO 225:2010); Multilingual version EN ISO 225:2010

Title (German)

Mechanische Verbindungselemente - Schrauben und Muttern - Bemaßung (ISO 225:2010); Mehrsprachige Fassung EN ISO 225:2010


This standard specifies the definitions for the dimensions of bolts, screws, studs and nuts for use in the appropriate product standards and drawings. Along with the update of figures and the incorporation of further dimensions, a supplement of bolts and screws with triple square socket head, stud bolts, set screws with hexolobular socket as well as thread forming screws and thread cutting screw has been incorporated. The European/International standard EN ISO 225 has been prepared by ISO/TC 2 "Fasteners", in collaboration with CEN/TC 185 "Fasteners" (both secretariats: DIN, Germany). The responsible German standardization committee is Working Committee NA 067-00-01 AA "Referenznormen und Qualitätsmanagement" ("Reference standards and quality management") at FMV.

Document: references other documents

Document: referenced in other documents

Responsible national committee

NA 067-00-01 AA - Reference standards and quality management 

Responsible european committee

CEN/TC 185 - Fasteners 

Edition 2011-02
Original language German, English, French, Russian
Price from 135.00 €
Table of contents


Mr. Dipl.-Ing.

Torsten Diether

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13627 Berlin

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