Equivalent US thread size somewhere between M4 and M5
- Thread starter oGaryo
- Start date
oGaryo
Well-Known Member
sorry for my absence on this one... just to clear a couple of things up, the threads aren't load bearing, they just keep the cap in place to seal the top of the actuator.. any load would be from the Trim Tab, up through the actuator and on to the bracket, in effect squeezing the cap between the main body of the actuator anf the transom mounting bracket... it's when there's no load that the leak potential in to the actuator is apparent i.e. that's when I need the nuts to hold the cap in place.
Regarding the comment of water ingress in to the boat itself, that's nothing more than there being a hole in the hull for the lead to go through.. just need to fill it with marine sealent once the jobs complete.
In shourt, I am more than comfortable in using Spotty D's method in this instance.
cheers
Regarding the comment of water ingress in to the boat itself, that's nothing more than there being a hole in the hull for the lead to go through.. just need to fill it with marine sealent once the jobs complete.
In shourt, I am more than comfortable in using Spotty D's method in this instance.
cheers
oGaryo
Well-Known Member
btw, thanks again for those that have taken the time to explain the imperial thread sizes.
This may help regarding the stress concerns it's something I wrote to document stripping down the actuator, the first photo should make it clear what the nuts are there for... do remember that when underway the pressure is upwards pushing the three components together rather than pulling them apart.. besides, if the nut were to fail the outcome is nothing more than a flappy Trim Tab so not life threatening..
This may help regarding the stress concerns it's something I wrote to document stripping down the actuator, the first photo should make it clear what the nuts are there for... do remember that when underway the pressure is upwards pushing the three components together rather than pulling them apart.. besides, if the nut were to fail the outcome is nothing more than a flappy Trim Tab so not life threatening..
oGaryo
Well-Known Member
Mystic Meg tells me it's for his trim tab actuator, and he can't launch without them as his boat won't be watertight.
(hint)
Andy
Miss Meg is a little minx isn't she
nothing more than not launching as it'd be folly where the actuator is concerned.. needs to be watertight before we go out to play i.e. I need to secure the cap so it doesn't start leaking again
oGaryo
Well-Known Member
On reading this advice I spotted some stainless steel nuts going cheap on Ebay sized 8-32 and thought that'd be about right even though they weren't domed.. I purchased them as I thought they may come in useful... 10 of them for 99p was cheap so no real loss if they went in the bin.
Recieved this email from Lenco tonight and the nuts arrived earlier today:
thanks again for your advice, looks like it's helped me get hold of the correct sized nuts ready for fitment tomorrow evening
pappaecho
Well-Known Member
Arthurs Chandlery in Gosport seem to have every thread known to man including UNF and UNC, as well as metric cycle and imperial and whitworth.Almost certainly they will be able to sort you out!
oGaryo
Well-Known Member
nice to know for an american sports cruiser.. will come in handy no doubt. thanks for posting
colhel
Well-Known Member
On reading this advice I spotted some stainless steel nuts going cheap on Ebay sized 8-32 and thought that'd be about right even though they weren't domed.. I purchased them as I thought they may come in useful... 10 of them for 99p was cheap so no real loss if they went in the bin.
Recieved this email from Lenco tonight and the nuts arrived earlier today:
thanks again for your advice, looks like it's helped me get hold of the correct sized nuts ready for fitment tomorrow evening
No problem Gary.
