Tap Terminology in England and other English Speaking Countries

[Paul Alciatore]

I have Machinery's Handbook and have looked at US web sites for the proper terminology for taps. But I am curious about any differences that may exist in England, Australia, and other English speaking countries. Terms like land, flute, chamfer, root, crest, etc. I am only interested in any proper terms, not slang. A good web site reference would be nice.

Any help would be appreciated.

[Duffy]

Paul:- Dormer Taps and Dies Ltd. Nottingham used to publish a lttle handbook titled "Dormer Tap and Die Information Handbook." My copy is ancient, (maybe 35-40 years,) but it seems to cover all aspects of their products, including alloys, nomenclature and design. This is a 3"X6" 68 page handbook that they used to give away as advertising. I know that I can still buy Dormer taps and dies here in Ottawa from the same company whose name is overlayed on the back of the book.

[Arthur.Marks]

I'm not English and never been there, but... I can't recall ever seeing a terminology difference specifically regarding taps. It is more often that someone misuses a term unintentionally. I'm sure I have mis-spoke before. The terminology of cutting tools can get very specific. Are there any specific examples you've noticed that seem contradictory between English and American writers?

[willmac]

In UK we call the taps in a set of three conventional taps taper, second and plug. In US I think you use different terminology for the taps in a set of three.

[Stepside]

Here on the "Left Coast" we have taper, plug and bottoming taps.

[boslab]

Hows this

http://www.etc-ltd.co.uk/documents/presto/taps-pages.pdf

Mark

[Paul Alciatore]

Good one. I have saved it and printed the first page.

It shows very few differences with what I have on US terminology.

Hows this

http://www.etc-ltd.co.uk/documents/presto/taps-pages.pdf

Mark