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Thread Size??
Posted: Sat Feb 21, 2009 8:04 pm
Author: DogsbolloxofZ1B
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.
Mike
Posted: Sat Feb 21, 2009 8:48 pm
Author: tlc
I always thought it was M10 x 1.0mm.
At least that`s what it was on my LC
Posted: Sun Feb 22, 2009 12:17 pm
Author: Ginger Bear
I think it's M10 x 1.25mm

Posted: Sun Feb 22, 2009 1:09 pm
Author: tlc
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
You could be right about the pressure switch Mike. 1/4 NPT looks good to me.
Posted: Sun Feb 22, 2009 10:11 pm
Author: DogsbolloxofZ1B
Thanks guys!
Posted: Tue Feb 24, 2009 2:27 pm
Author: DogsbolloxofZ1B
FYI, the brake pressure switch is 1/8" *27 NPT
Mike
Posted: Tue Feb 24, 2009 2:44 pm
Author: Ginger Bear
Think I've learnt something there! I was thinking about banjo bolts.......oops

Posted: Wed Feb 25, 2009 7:43 pm
Author: Pigford
Not wot Dogs is on about, but dead handy link.............
http://www.lantechsolutions.co.uk/produ ... leBolt.php
Posted: Wed Feb 25, 2009 7:52 pm
Author: DogsbolloxofZ1B
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..
Mike
Posted: Wed Feb 25, 2009 8:15 pm
Author: Ginger Bear
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!
Posted: Thu Feb 26, 2009 9:02 am
Author: DogsbolloxofZ1B
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.

brake
Posted: Thu Feb 26, 2009 9:10 am
Author: AL MARSHALL
hi dogs, the brake light switch thread is 1/8 bsp taper. the other connections are m10x1.25(banjo) regs al
Posted: Thu Feb 26, 2009 1:09 pm
Author: DogsbolloxofZ1B
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