[modeleng] Re: Mystery thread
- From: "Jeff D" <jeffdayman@xxxxxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Thu, 22 Nov 2007 12:23:13 +0000
This machine is Rockwell and will either be made in USA or Taiwan. It is
very unlikely that it would have any Whitworth or cycle threads. US
manufacturers just didn't use those fasteners on tools, period. Only
recently do you find metric on tools made by US firms, it's only because
they are having so much stuff made offshore for the last 10 yr or so. Before
that, fasteners are either USS, UNC or UNF on US tooling.
Cheers Jeff Dayman
>From: john.burridge@xxxxxxxxxx
>Reply-To: modeleng@xxxxxxxxxxxxx
>To: modeleng@xxxxxxxxxxxxx
>Subject: [modeleng] Re: Mystery thread
>Date: Thu, 22 Nov 2007 09:19:51 +0100 (CET)
>
>Harry Hi,
>The thread that you speak of could be 7/32" X 26 TPI which if its 55 drgree
>form its British standard brass(BSB) or if its 60 drgree form it may be
>Britich Standard Cycle(BSC formerly CEI)
>
>as its 26 tpi you could go up to 6mm X 1mm (25.4TPI)Pitch which would be
>easier to get grub screwws for.
>
>yours John Burridge
>
>
> > Message Received: Nov 21 2007, 03:41 AM
> > From: "Harry Wade" <hww@xxxxxxxx>
> > To: modeleng@xxxxxxxxxxxxx
> > Cc:
> > Subject: [modeleng] Mystery thread
> >
> > I am presently converting a 14" Rockwell wood bandsaw for metal cutting
>and I need to match the thread of a grubscrew (missing) for a David Brown
>reduction gearbox, which I assume was made in the UK. The screw diameter
>measures .216" and the pitch is between a 24 and 28tpi but it is neither a
>24 nor 28. The .216" is dead-on for a US #12 machine screw but it isn't
>that. Anyone have an idea what this thread might be?
> > Regards,
> > Harry
> >
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