Die query?

Die query?

This topic has 10 replies, 8 voices, and was last updated 3 February 2021 at 16:12 by Peter Jones 20.

Viewing 11 posts - 1 through 11 (of 11 total)

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29 January 2021 at 09:46 #20130
Bo’sun
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@bosun58570
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29 January 2021 at 09:46 #523450
Bo’sun
Participant
@bosun58570
Good morning,

I've been sorting through some acquired taps and dies and came across a die with the engraving "3/8 x 26 BRASS", made by LAL ltd England. It's a conventional round split steel die.

Too fine for BSF or UNF. Any suggestions what it's for?
29 January 2021 at 09:51 #523451
JasonB
Moderator
@jasonb
Brass thread is a standard thread form. originally used on brass tube wher ethe wall thickness was too thin for a coarse thread.

Edited By JasonB on 29/01/2021 09:52:36
29 January 2021 at 09:52 #523452
DC31k
Participant
@dc31k
Please have a read of these threads:

https://www.model-engineer.co.uk/forums/postings.asp?th=170639

https://www.model-engineer.co.uk/forums/postings.asp?th=170798
29 January 2021 at 10:38 #523464
Bo’sun
Participant
@bosun58570
Thank you,

Any idea what sort of things would they have been used for?
29 January 2021 at 10:52 #523469
Chris Evans 6
Participant
@chrisevans6
Posted by Bo'sun on 29/01/2021 10:38:36:

Thank you,

Any idea what sort of things would they have been used for?

Light fittings and some plumbing items.
29 January 2021 at 11:04 #523472
Nicholas Farr
Participant
@nicholasfarr14254
Hi Bo'sun, I guess you can use them for anything you like, but as Chris has said, light fittings are typical.

Regards Nick.
29 January 2021 at 11:50 #523483
noel shelley
Participant
@noelshelley55608
A thread system that used 26 tpi for all diameters. Thin walled brass tube, hence the name. A common thread in light fittings now is 10mmX 1.0 Noel
30 January 2021 at 19:58 #523777
Howard Lewis
Participant
@howardlewis46836
As a footnote, if needed, BSB is a Whit form thread, of 55 degrees.

1/4 BSF happens to coincide by also being 26 tpi.

Cycle Thread (CEI ) also standardises on 26 tpi but is 60 degree form. It does not coincide with any UNF or UNEF size..

Howard
31 January 2021 at 09:37 #523853
Bo’sun
Participant
@bosun58570
Thank you Howard.
3 February 2021 at 16:12 #524555
Peter Jones 20
Participant
@peterjones20
All the information was available in the free 'handbook' pages published in the 90's in MEW.

I still have mine and reference it more frequently than I probably should to make comments on You Tube
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