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Closet Powerboater
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My new boat is riddles with the regular stainless hose clamps that have the perforations in them for the tightening screw. They look like this:



I would like to replace them all (at least at, near, or under the waterline) with better ones. Something like these perhaps?


Or these:


Anyone have a favorite supplier?

MedSailor
 

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Look for an industrial hosing supply shop in your area. Just down the street from my work I have a place called Connector Specialists in an industrial shop park that sells the style of clamps that you are looking for in all 316 SS and they are cheap. I know this doesn't help you but might give an idea of where to look.
 

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I followed Main Sail's instructions (thanks again for your great articles) when replacing my one (1) thru-hull and I bought these hose clamps from Hamilton Marine.

HOSE CLAMP S/S US SIZ 12 7/8"-1.25" 10/BOX 102619

Box of ten and I only used eight. Should I mail you my extra two? :)

The type of clamp you pictured are made by ABA but they are for small fuel lines etc.. For larger clamps AWAB clamps are about the best you will find.

Hamilton Marine stocks them..

AWAB on top:
 

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We use the AWAB clamps on my commercial boats. You really crank them down tight without damaging the hose, and they don't pop loose if you over tighten them. Two things I don't like about them is they take more effort to screw in and the hex heads are metric.
 

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We use the AWAB clamps on my commercial boats. You really crank them down tight without damaging the hose, and they don't pop loose if you over tighten them. Two things I don't like about them is they take more effort to screw in and the hex heads are metric.
The hex heads are 7mm and you can buy an AWAB flexible driver which is a great tool.... Hamilton also has the AWAB Flexible Driver...
 

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Just an FYI, the middle clamp posted by the OP is usually called a T-bolt clamp.

Even though they are awesome, they are built for a different task. They are made to take high pressure and are usually found on the charge air side of a Turbo. Although they would work on a boat, I think they would be very cost prohibitive. Not to mention they don't have a lot of adjustment and you need to make sure you get the right clamp for the application.
 

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You should be able to get those locally at a local NAPA/some auto parts places, local WM should have them.........Seattle does, Anacortes is bigger. Fisheries may also, as will the large chandlery in Everett on the north side of the marina.

Marty
 

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Whenever I buy anything like a clamp, I always buy them by the box or whatever quantity is available. Much cheaper, per item, and building a spare inventory is pretty critical in my book. Especially things like hose clamps.

That flexible driver just went on my list!! I have a nut driver, but it's a bit of a pain, particularly when the clamp rotated to a tough angle by the last yard tard. The other frustrating think on our boat is that a few of the clamps are 8mm?? Most are 7mm. I need to swap out the 8s.
 
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While on this subject I have a question: What the hell are the tricks for getting tight hoses on/off seacocks?

One of my most curse inducing regular maintenance activities is putting the engine hose back onto the seacock.

I typically find it literally impossible to get the hose on the entire way - in addition to being bad itself, it means that I've gone with one hose clamp at times because I wasn't convinced the second would be clamping on the nipple.
 

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While on this subject I have a question: What the hell are the tricks for getting tight hoses on/off seacocks?

One of my most curse inducing regular maintenance activities is putting the engine hose back onto the seacock.
Heat gun, if absolutely necessary. However, I find the reinforced black rubber hoses are easier, as is.

I typically find it literally impossible to get the hose on the entire way - in addition to being bad itself, it means that I've gone with one hose clamp at times because I wasn't convinced the second would be clamping on the nipple.
You know you have a lecture coming for this one, right?

At the least, I hope you always close your thruhulls, when not aboard.
 

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While on this subject I have a question: What the hell are the tricks for getting tight hoses on/off seacocks?

One of my most curse inducing regular maintenance activities is putting the engine hose back onto the seacock.

I typically find it literally impossible to get the hose on the entire way - in addition to being bad itself, it means that I've gone with one hose clamp at times because I wasn't convinced the second would be clamping on the nipple.
I swab Lanocote inside the hose and double clamp. Makes it easy to get on & off.
 

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I swab Lanocote inside the hose and double clamp. Makes it easy to get on & off.
And you're sure you want it to be easy to come off? That's been my concern adding any form of lubricant.

Minnewaska:
Yes I do close the seacock every time I'm off the boat. I think this brings the risk down to a reasonable level.

What I need to find are new high quality clamps that are narrower so I can fit two of them. And not only do I have this problem on the seacock but also on the engine and inline strainer which are all fairly small.

Though I have forgotten on occasion and that's when all the failings of my system make for uneasy sleep.

I take it off every year to winterize on the hard and then commission on the hard again in the spring which requires using a bucket for cooling.
 
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