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Thread Size??

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DogsbolloxofZ1B
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Thread Size??

#1 PostAuthor: DogsbolloxofZ1B » Sat Feb 21, 2009 8:04 pm

Anyone know what the thread size is for:

a) Z1 Caliper brake line connection (Not the nipple)
b) Z1 brake pressure switch.

I'm guessing its a pipe thread, maybe 1/4"NPT.

ta.
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tlc
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#2 PostAuthor: tlc » Sat Feb 21, 2009 8:48 pm

I always thought it was M10 x 1.0mm.

At least that`s what it was on my LC
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#3 PostAuthor: Ginger Bear » Sun Feb 22, 2009 12:17 pm

I think it's M10 x 1.25mm :roll:
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tlc
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#4 PostAuthor: tlc » Sun Feb 22, 2009 1:09 pm

I still reckon it`s 10 x 1.0 :|

Sorry my old Yam one is 1.0mm.

Just checked an old distributor block and reckon you are right :oops:

You could be right about the pressure switch Mike. 1/4 NPT looks good to me.
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#5 PostAuthor: DogsbolloxofZ1B » Sun Feb 22, 2009 10:11 pm

Thanks guys!
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#6 PostAuthor: DogsbolloxofZ1B » Tue Feb 24, 2009 2:27 pm

FYI, the brake pressure switch is 1/8" *27 NPT

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#7 PostAuthor: Ginger Bear » Tue Feb 24, 2009 2:44 pm

Think I've learnt something there! I was thinking about banjo bolts.......oops :??
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#8 PostAuthor: Pigford » Wed Feb 25, 2009 7:43 pm

Not wot Dogs is on about, but dead handy link.............

http://www.lantechsolutions.co.uk/produ ... leBolt.php
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#9 PostAuthor: DogsbolloxofZ1B » Wed Feb 25, 2009 7:52 pm

That's a handy link. I got hold of an 1/8"NPT tap today and its not right! I never thought this would be a metric thread as it appears to be tapered, however, its an M10 * 0.75 Pitch i.e an M10 Fine thread. I've got one of those in the garage..

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#10 PostAuthor: Ginger Bear » Wed Feb 25, 2009 8:15 pm

Mike, M10 x 0.75 is a mighty fine pitch indeed. Just in case it turns out to be M10 x 1.0 which is still fine compared to the M10 x 1.25 normally called fine by most fastener suppliers. I have a tap you can borrow! M10 x 1.0 that is!
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#11 PostAuthor: DogsbolloxofZ1B » Thu Feb 26, 2009 9:02 am

Now I'm confused, I measured this thread with a set of thread gauges and its definitely an 0.9mm pitch and 9.9mm OD, I've never heard of a
M10*0.9mm thread size.

This must be some odd-ball thread. My thread gauges cover a huge range and it not 0.75 or 0.8 or 1.0 its def 0.9mm pitch.

Plenty of head scratching now. :roll: :roll:
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AL MARSHALL
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brake

#12 PostAuthor: AL MARSHALL » Thu Feb 26, 2009 9:10 am

hi dogs, the brake light switch thread is 1/8 bsp taper. the other connections are m10x1.25(banjo) regs al
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#13 PostAuthor: DogsbolloxofZ1B » Thu Feb 26, 2009 1:09 pm

Al many thanks, that checks out correctly, longtime since I was a hands-on engineer.

This website is useful http://www.ring-plug-thread-gages.com/t ... arts7.html :)

Cheers,
Mike
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