... and where can I get a socket to fit it please ?
It is about 44mm in overall diameter.
I tried Googling "circular nut" but this leads to angle grinder disc retainers.
Its a tail-gate lock on an MGBGT btw.
Thanks ,
Tony.
What do you call this type of circular nut ...
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What do you call this type of circular nut ...
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- trackerjack
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Re: What do you call this type of circular nut ...
Threaded retainer or locking collar 

track action maniac.
The lunatic is out................heres Jonny!
The lunatic is out................heres Jonny!
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Re: What do you call this type of circular nut ...
I always tighten them with a water pump pliers, or if there is no room for them, do it up finger tight and then tap round with a hammer and screwdriver.
Steve
Steve
'73 2 door Toledo with Vauxhall Carlton 2.0 8v engine (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine (The Dolomega)
'72 Triumph 1500FWD in Slate Grey, Now with RWD and Carledo powertrain!
Maverick Triumph, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 50 years. PM for more info or quotes.
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine (The Dolomega)
'72 Triumph 1500FWD in Slate Grey, Now with RWD and Carledo powertrain!
Maverick Triumph, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 50 years. PM for more info or quotes.
Re: What do you call this type of circular nut ...
Tail gate lock nut.
Jeroen
Jeroen
Classic Kabelboom Company. For all your wiring needs. http://www.classickabelboomcompany.com
Re: What do you call this type of circular nut ...
I'm going to guess it's just called a lock nut. Take a file to a standard socket? Or as Steve said, hammer and screwdriver.
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Re: What do you call this type of circular nut ...
Thanks All for your advice. I was looking at making up something by cutting slots in a piece of pipe as I didn't want to risk punching the bodywork, and water pump pliers were too large to get in.
I did notice that the internal bits and pieces were held in by a circlip. It was quite easy to remove this and just swap the lock barrel. And I didn't need to fit the gasket kit.
Sorted !
I did notice that the internal bits and pieces were held in by a circlip. It was quite easy to remove this and just swap the lock barrel. And I didn't need to fit the gasket kit.
Sorted !