[xj] British Tap & Die Sets

Does anyone here know of a good source I can try to get a Tap & Die
set for the British Fine Pipe Whitworth, etc., etc., fasteners?

I had my tanks dipped and then they sat for quite some time. So
there’s some of the coating and a speck of rust in the threads for
the tank fittings that I’d like to clean out prior to trying to
screen in the brass fittings.–
Jamie - 88 SIII V12 VdP & 89 XJS Conv
Tulalip, WA, United States
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In reply to a message from Jamie Duffey sent Fri 21 Jul 2006:

Jamie

Sorry to say they don’t seem to be readily available anywhere in UK
at the moment. About the only place I’ve found them are at auto
jumbles where sometimes a stall will have a mixed box of old
equipment and foraging about sometimes throws up a useful size.

Unless of course anyone knows different?–
The original message included these comments:

Does anyone here know of a good source I can try to get a Tap & Die
set for the British Fine Pipe Whitworth, etc., etc., fasteners?


al mclean '93 XJS 4.0 - '79 SII XJ6 mod - '84 4.2 Daimler
Telford, United Kingdom
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Snap On is probably an option, although they usually want a kings ransom
for their tools. Try a search for King Dick brand tools, I thought there
was a British tool dealer in the Midwest somewhere, but the name and
place escapes me.

Craig
92 VDP

Jamie Duffey wrote:>Does anyone here know of a good source I can try to get a Tap & Die

set for the British Fine Pipe Whitworth, etc., etc., fasteners?

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In reply to a message from Jamie Duffey sent Fri 21 Jul 2006:

If I recall, the brass threads at the bottom are fairly large
diameter. I think you can use a thread guage from ant tap and die
set and scrape the threads by hand to get the material off. For
that matter, you can make a scraper to do one thread at a time.
The threads form a 60 degree angle.–
The original message included these comments:

Does anyone here know of a good source I can try to get a Tap & Die
set for the British Fine Pipe Whitworth, etc., etc., fasteners?
I had my tanks dipped and then they sat for quite some time. So
there’s some of the coating and a speck of rust in the threads for
the tank fittings that I’d like to clean out prior to trying to
screen in the brass fittings.


Pete 70 XKE (193K) 88 XJ6 (233K) 88 XJ6 (217K) 60 Mini
Severna park, Maryland, United States
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In reply to a message from Jamie Duffey sent Fri 21 Jul 2006:

Hi Jamie,

Try these guys in the UK (they ship overseas)

They don’t list them but might be able to source whitworth stuff.

We use them for all our Taps and Dies etc and they are a great
supplier and very reliable.

ATB

Steve–
The original message included these comments:

Does anyone here know of a good source I can try to get a Tap & Die
set for the British Fine Pipe Whitworth, etc., etc., fasteners?


http://www.skjagtech.co.uk TWR XJ-S TWR XJ6-S3 and X300
Somerset, United Kingdom
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In reply to a message from Jamie Duffey sent Fri 21 Jul 2006:

Try:

http://www.britishtool.com/

They’re in Michigan and do mail order.–
Maynard 94 XJS V12 Coupe 91XJS(RIP) 86XJ6 78MGB 67MGB
Niles, IL, United States
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In reply to a message from Maynard sent Sat 22 Jul 2006:

I thought the US SAE fine thread was so close to the UK Fine thread
that they were interchangable. Am I wrong? I know I have replaced
several Jag fine thread bolts with SAE fine thread bolts and have
had no problems thus far. They seem to match up when held together
meshing the threads or runing a nut on them to check for
compatibility.
David in Dayton, TX–
81 XJ6
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In reply to a message from Jamie Duffey sent Fri 21 Jul 2006:

Try www.britishfasteners.com. Worth it for the info alone. Just
visited the site after seeing an ad for them in ‘‘Norton News’’.
Best of luck.–
Paul Spitzer
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So far, just FYI, I’ve run into no threads that aren’t matched by what we get
here in the US in a hardware store as coarse, fine, or metric. And, as most
of you may know, I’ve has a personal relationship with most of the fasteners
on both our cars!–
Alex
79xj6L SII (BRG + wires)
86xj6 SIII (Black)
61 Sprite MkII (Red)
Menlo Park, Calif.

David McNair wrote:

In reply to a message from Maynard sent Sat 22 Jul 2006:

I thought the US SAE fine thread was so close to the UK Fine thread
that they were interchangable. Am I wrong? I know I have replaced
several Jag fine thread bolts with SAE fine thread bolts and have
had no problems thus far. They seem to match up when held together
meshing the threads or runing a nut on them to check for
compatibility.
David in Dayton, TX

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In reply to a message from David McNair sent Sat 22 Jul 2006:

Thanks guys for all the opinions, er ah ‘‘options’’ (yeah, that’s
what I meant). I’ll be trying any and all avenues I can to get the
correct Tap to use for my project.

I find myself agreeing more with Alex on the point that there are
definitely differences in the SAE vs British threads. But I guess
I am yet to be fully educated on the issue. I just know that I
don’t want the fuel to start leaking at the tank fitting because I
used ‘‘something close enough’’ (even though that might be a good
enough fix). It’s that ‘‘purrfectionist’’ in me that wants
it ‘‘stock’’ if possible.

When I get a resolution, I’ll post so we have a record here.

Thanks again!–
The original message included these comments:

I thought the US SAE fine thread was so close to the UK Fine thread
that they were interchangable. Am I wrong? I know I have replaced
several Jag fine thread bolts with SAE fine thread bolts and have
had no problems thus far. They seem to match up when held together
meshing the threads or runing a nut on them to check for
compatibility.


Jamie - 88 SIII V12 VdP & 89 XJS Conv
Tulalip, WA, United States
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Jamie, that’s what plumber’s teflon tape is for!
:]
Alex
79xj6L SII (BRG + wires)
86xj6 SIII (Black)
61 Sprite MkII (Red)
Menlo Park, Calif.

Jamie Duffey wrote:> In reply to a message from David McNair sent Sat 22 Jul 2006:

Thanks guys for all the opinions, er ah ‘‘options’’ (yeah, that’s
what I meant). I’ll be trying any and all avenues I can to get the
correct Tap to use for my project.

I find myself agreeing more with Alex on the point that there are
definitely differences in the SAE vs British threads. But I guess
I am yet to be fully educated on the issue. I just know that I
don’t want the fuel to start leaking at the tank fitting because I
used ‘‘something close enough’’ (even though that might be a good
enough fix). It’s that ‘‘purrfectionist’’ in me that wants
it ‘‘stock’’ if possible.

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In reply to a message from Cannara sent Sun 23 Jul 2006:

‘‘So far, just FYI, I’ve run into no threads that aren’t matched by
what we get here in the US in a hardware store as coarse, fine, or
metric.’’

Can’t comment on what you’ve run into Alex, but there are some
incompatible threads on Jags :slight_smile:

The Unified National system used on our era of Jags matches
American and many British threads, although these are definitely
not the same in their original form. There were problems in WW2
with supposed ‘Imperial’ fasteners not being transferable between
British equipment and US equipment. American bolts had flat-
bottomed groves between screw threads, which interfered with
British round-topped nut threads. Likewise, British round topped
bolts wouldn’t fit American nuts properly although many things
can be forced and doubtless were in the heat of battle.

UNF/UNC fasteners were developed with a round-bottom groove to fit
the British threads, and a flat-topped thread to fit the American
threads, so they not only fit with themselves but with either
system. Thank NATO spec for sorting that lot out. We may be ‘two
nations divided by a common language’ but at least we can screw
each other properly…LOL

However, on Jags the BA (mostly electrical) and Whitworth threads
(e.g. in diff casing) are not compatible with US fasteners IMHO, as
the thread angles are 47.5 and 55 degrees respectively. BSP threads
are also incompatible with American fasteners I think. Doesn’t mean
you can’t cobble something together but it’s not the same as the
correct fit. (BSF/BSC/UNF/UNC/SAE and Metric are all 60 degree
thread angle).–
Peter Crespin 66 2+2 ‘E’
Buxton, United Kingdom
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Thanks for the laborious detail Peter, but I’m down to a handful of unvisited
fasteners on both cars and have yet to experience screwing issues.
:]–
Alex
79xj6L SII (BRG + wires)
86xj6 SIII (Black)
61 Sprite MkII (Red)
Menlo Park, Calif.

Peter Crespin wrote:

In reply to a message from Cannara sent Sun 23 Jul 2006:

‘‘So far, just FYI, I’ve run into no threads that aren’t matched by
what we get here in the US in a hardware store as coarse, fine, or
metric.’’

Can’t comment on what you’ve run into Alex, but there are some
incompatible threads on Jags :slight_smile:

The Unified National system used on our era of Jags matches
American and many British threads, although these are definitely
not the same in their original form. There were problems in WW2
with supposed ‘Imperial’ fasteners not being transferable between
British equipment and US equipment. American bolts had flat-
bottomed groves between screw threads, which interfered with
British round-topped nut threads. Likewise, British round topped
bolts wouldn’t fit American nuts properly although many things
can be forced and doubtless were in the heat of battle.

UNF/UNC fasteners were developed with a round-bottom groove to fit
the British threads, and a flat-topped thread to fit the American
threads, so they not only fit with themselves but with either
system. Thank NATO spec for sorting that lot out. We may be ‘two
nations divided by a common language’ but at least we can screw
each other properly…LOL

However, on Jags the BA (mostly electrical) and Whitworth threads
(e.g. in diff casing) are not compatible with US fasteners IMHO, as
the thread angles are 47.5 and 55 degrees respectively. BSP threads
are also incompatible with American fasteners I think. Doesn’t mean
you can’t cobble something together but it’s not the same as the
correct fit. (BSF/BSC/UNF/UNC/SAE and Metric are all 60 degree
thread angle).

Peter Crespin 66 2+2 ‘E’
Buxton, United Kingdom

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In reply to a message from Cannara sent Tue 25 Jul 2006:

All I can say is heh.–
The original message included these comments:

fasteners on both cars and have yet to experience screwing issues.


Dave W 85 XJ6 VDP ‘Black Beauty’ 157K - Rebuilding
Lansdale, PA, United States
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Wasn’t it worth at least a heh, heh?–
Alex
79xj6L SII (BRG + wires)
86xj6 SIII (Black)
61 Sprite MkII (Red)
Menlo Park, Calif.

1985vdp wrote:

In reply to a message from Cannara sent Tue 25 Jul 2006:

All I can say is heh.

The original message included these comments:

fasteners on both cars and have yet to experience screwing issues.

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