The WCO (World Customs Organization) maintains the detailed international Harmonized Commodity Description and Coding System (HS) (often called the Harmonized System or Harmonized Tariff Schedule) which places mechanical pencils in chapter 9608.40 “Propelling or sliding pencils”.
The United Nations maintains the less detailed International Standard of Industrial Classification of All Economic Activities (ISIC) which places mechanical pencils in class 3290 which is a broad class including
- manufacture of pens and pencils of all kinds whether or not mechanical
- manufacture of pencil leads
The International Standards Organisation (ISO) has published standard ISO 9177.1-1989 "Mechanical pencils - Part 1: Classification, dimensions, performance requirements and testing."
At a more country specific level:-
As required by international treaty, the United States Harmonized Tariff Schedule places mechanical pencils in 9608.40 “Propelling or sliding pencils (for example, mechanical pencils)”. The Harmonized System prohibits countries from renaming sections, but the US have added an explanatory example in their tariff schedule, thus propelling pencil, sliding pencil and mechanical pencil have official use as names in the USA.
On the other hand the US, Canadian and Mexican governments also use the North American Industry Classification System (NAICS) which refers to “mechanical pencils” and “pencils, mechanical” in codes 339941 and 339942 but does not use the terms propelling pencil or sliding pencil anywhere.
In the United Kingdom, the UK Office for National Statistics uses UK SICS (UK Standard Industrial Classification) to classify industries and products. UK SICS is identical to the EUROSTAT System NACE at the four digit class level and the United Nations system ISIC at the two digit Divisional level. Similar to ISIC, in the broad class 32.99 we find
- manufacture of pens and pencils of all kinds whether or not mechanical
- manufacture of pencil leads
The Harmonized Tariff Schedule of the WCO is used by the vast majority of countries to control and classify the vast majority of internationally traded goods. It is used in tens of thousands, maybe even millions, of import / export shipping and customs documents every day around the world. I personally feel if there is one internationally recognized and accepted ‘correct’ term for mechanical pencils then, in English, it is “propelling and sliding pencils” despite the fact that common everyday usage disagrees.