In Germany, on March 1, 1918, the conical pin received the first DIN standard , DIN 1, from the standards committee of German industry (today the German Institute for Standardization ) . This standard was withdrawn in 1992 and replaced by the European standard EN 22339.
|DIN EN 22339|
|title||Conical pins, unhardened|
|Brief description:||The document contains the relevant specifications and technical delivery conditions for tapered pins, unhardened, and specifies their designation.|
|ISO||ISO 2339: 1986|
The following standards exist for taper pins:
- DIN 1 / EN 22339 / ISO 2339 taper pins, unhardened
- DIN 257 taper pins; with threaded pin; Whitworth thread 1/4 ″ to 1½ ″
- DIN 258 taper pins with threaded pin and constant taper lengths
- DIN 7977 / EN 28737 / ISO 8737 taper pins with threaded pin and constant thread pin length
- DIN 7978 / EN 28736 / ISO 8736 tapered pins with internal thread , unhardened
- DIN: The first German standard appeared 95 years ago. March 1, 2013, accessed March 30, 2016 .