BSPP / BSPT - What am i missing!?

[smallsteve]

Why is that outlets such as Screwfix and Toolstation, for example, never identify fittings as BSPP (parallel) or BSPT (tapered)? They all just get labelled as BSP and it seems there is a reliance on the purchaser to ‘know’ what they require and that the part they are purchasing is one or the other; damned difficult to tell from a picture on a website.
Many threads on here (no pun intended, unless you find it hilarious) aren’t specific either and so i fear that the issue is my ignorance, rather than an industry-wide problem!?
I get that you can put a tapered thread into a parallel thread and parallel-to-parallel can be achieved with something like Loctite 577, if necessary. But surely it’s better to know that you are buying the correct part, rather than relying latterly on some form of thread sealant to make it secure?
Coming from a different engineering discipline where everything is nailed-down, i find it very odd. But again, i might be highlighting my naivety. :-/

 

[ShaunCorbs]

All the Screwfix / diy ones are parallel

these days you won’t get much tapered threaders unless it’s something like nipples / npt

 

[smallsteve]

All the Screwfix / diy ones are parallel

these days you won’t get much tapered threaders unless it’s something like nipples / npt

Thanks for the response Shaun. I’ll try and remember that, as i have wasted countless hours reading hundreds of (boring or irrelevant) reviews to determine one way or the other. Very frustrating for the ignorant amongst us!
[automerge]1595705647[/automerge]
To digress for a moment if i may, I read that BSPT females tend to be parallel as well, unless marked as Rc, with the male being tapered. Is that correct?

 

[Stigster]

If the nut fits the thread, we make it seal one way or another, that's the bottom line.

 

[smallsteve]

If the nut fits the thread, we make it seal one way or another, that's the bottom line.

Hi Stigster, i was heading towards that conclusion.

 

[Stigster]

Hi Stigster, i was heading towards that conclusion.

Male to female parts are only natural whatever the respective taper.

We are experts in such matters.

 

[smallsteve]

Male to female parts are only natural whatever the respective taper.

We are experts in such matters.

I am starting to think i chose the wrong branch of engineering!

 

[Stigster]

With regard to precision, engineers work to the thousandth of an inch.

Plumbers work to spot on.

(bet you never heard that one before 🤔)