Bolt size (SU HS6) ???

agent_strangelove · Aug 22nd, 2012, 21:31

Has anyone gone to the trouble to replace the small hex bolt, nut and washer that hold the cable clamp on the choke cable for an 2-bolt SU carb? I have a couple of clamps but am missing some of the bolts. I took one out and took it to the special bolt store. It's like it's a #6-38TPI. #6 is normally either 32 TPI or 40 TPI.

I really don't think it would be metric.

Any one figured this out or am I splitting hair too much???

Thanks
Chris

classicswede · Aug 22nd, 2012, 22:03

It could possibly be metric but I don't actualy know. I'mm notl ikely to get to a car with 2 bolt SU's to check for a couple of weeks.

Bladerider · Aug 23rd, 2012, 13:00

What about a BA thread. a 4 BA has a pitch of 38.5 per inch

This site is quite useful.
http://www.britishfasteners.com/threads/index.html

thealchemyst · Aug 23rd, 2012, 22:06

You could just ask southern carburettors they make em and will have spares or any mini parts supplier will be able to get you some.

Aug 22nd, 2012, 21:31	#1
agent_strangelove Pastry Engineer Last Online: Mar 3rd, 2024 21:47 Join Date: Feb 2008 Location: Scappoose Oregon	Bolt size (SU HS6) ??? Has anyone gone to the trouble to replace the small hex bolt, nut and washer that hold the cable clamp on the choke cable for an 2-bolt SU carb? I have a couple of clamps but am missing some of the bolts. I took one out and took it to the special bolt store. It's like it's a #6-38TPI. #6 is normally either 32 TPI or 40 TPI. I really don't think it would be metric. Any one figured this out or am I splitting hair too much??? Thanks Chris

Aug 22nd, 2012, 22:03	#2
classicswede Trader Volvo in my veins Last Online: Yesterday 21:36 Join Date: Dec 2004 Location: Anglesey	It could possibly be metric but I don't actualy know. I'mm notl ikely to get to a car with 2 bolt SU's to check for a couple of weeks. __________________ http://www.classicswede.org www.classicswede.co.uk

Aug 23rd, 2012, 13:00	#3
Bladerider Amazoniac Last Online: Nov 18th, 2014 13:53 Join Date: Oct 2010 Location: Essex	What about a BA thread. a 4 BA has a pitch of 38.5 per inch This site is quite useful. http://www.britishfasteners.com/threads/index.html __________________ 1966 122S registered 1/1/67. Metallic Blue moving to original Horizon Blue during restore like this one.

Aug 23rd, 2012, 22:06	#4
thealchemyst Master Member Last Online: Aug 22nd, 2018 20:57 Join Date: Apr 2009 Location: Coalville/Leicestershire	You could just ask southern carburettors they make em and will have spares or any mini parts supplier will be able to get you some. __________________ 1995 850 t5 glt estate purple,FK-40mm,stainless exhaust polybushed,wilwood4pot+s60r discs,mbc,019 battery,18" c30 alloys,michelin pilots,silicone hoses,braided brake lines,HID's,ipd track swaybars 25+mpg :0) @Prescott Hillclimb

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