Taps and dies

[rusty3121Participant @rusty3121]

I have some metric taps and dies. They have no manufactures name such as Presto but only have a logo of 2 slightly overlapping triangles. Can someone enlighten me of the manufacturer and whether then would be HSS?

[rusty3121]

On 24 May 2026 at 12:12 rusty3121 Said:

I have some metric taps and dies. They have no manufactures name such as Presto but only have a logo as in the photo below. Can someone enlighten me of the manufacturer and whether then would be HSS?

[Andrew TinsleyParticipant @andrewtinsley63637]

Yes. Triangle taps and dies were HSS. I can’t remember who the manufacturers were, but I think they were made by LAL. Others will correct me if I am wrong!

Andrew.

[martin haysomParticipant @martinhaysom48469]

you can tell by looking at them. find one you know is HSS and one you know is CS look closely at the two and compare to your mystery ones

[noel shelleyParticipant @noelshelley55608]

Triangle Brand were well known in the 60s, it was up with the best brands. Noel.

[Julie AnnParticipant @julieann]

I have a set of ME taps and dies that are Triangle brand:

The set was a birthday present more years ago than I care to remember. The manufacturer was the British Tap & Die Company, which I think became the Tap & Die Company, and was then taken over by CR Tools in Sheffield.

I am fairly sure the taps and dies are carbon steel. Mostly I don’t use the set now as I have HSS ME taps and prefer to screwcut external ME threads.

Julie

[Nicholas FarrParticipant @nicholasfarr14254]

Hi,

Graces Guide.co.uk

Regards Nick.

[rusty3121Participant @rusty3121]

Thanks for the replies. I have now downloaded a close up photo of the marking and its not actually triangles but more like mountains or a letter symbol?

[Andrew TinsleyParticipant @andrewtinsley63637]

Rusty, the double triangles that you show are definitely the trademark of Triangle taps and dies Ltd. No ifs or buts!

I have a couple of sets of triangle taps and dies. These are definitely HSS and not the carbon steel that Julie has.

Andrew.

[BazParticipant @baz89810]

Julie is correct regarding manufacturers, I have an identical set, also a birthday present over 40 years ago, they are carbon steel.

[Bill PhinnParticipant @billphinn90025]

I’m used to seeing Triangle Brand taps and dies. All the ones I’ve seen have three overlapping triangles each of which has a flat “base” with the middle triangle higher (or lower, depending on the orientation) than the outer two triangles.

 

Can anyone show us another tap or die in a Triangle branded box that has only the two overlapping triangles with slightly curved bases on the same level as seen in rusty’s image?

[noel shelleyParticipant @noelshelley55608]

On reflection and like Bill, the trade mark does not look right ? Compare the OP s photo with that in the boxed set, it doesn’t look right.  Noel.

[Julie AnnParticipant @julieann]

All the above rather implies that the OP’s taps are not Triangle brand. No idea what they are though. I had a quick look through some of my taps this morning. Very, very, few have any sort of logo and none like the OP.

Julie

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