The UK's Finest Independent Forum for Shooters and Gun Owners. Est 2010.

kennyc wrote:

ozone wrote:.


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I've only ever used threadlock on rail and base screws, never had a scope ring come loose ? is it a common problem?

Brand new scope and the rings shook loose after about 30 shots?????

Not expensive rings, just the ones supplied with the scope so I have ordered
Different mounts and I'm going to thread lock it in :-).

ozone

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Must add, the ring mount around the scope tube was still secure,
it was the mount itself to the the rifle mount that shook loose :-)

ozone

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TomH wrote:

polemass wrote:Green is the hardest....red one softens after some heat is applied...blue will be ok for the scope

Yep, green is the hardest. In case this thread degenerates into "my Loctite is harder than yours", I've got some 601 in my shed.

yeah, but 601 is bearing lock or a retaining compound, not really designed for thread locking. don't see a lot of 601 about, 603 is a lot more common

bradaz11 wrote:blue is pretty much instant, sub 30 secs, red is a few mins, green is 5 or so. obviously all down to temp of item too.
222 never really goes off, as it's tackyness which holds it.
I think most of them only set when no air is present, which is why less is more is the key here.

Many thanks.

We use 243, 2700 and 638. The 243 for rings and similar which might need to be removed at a later date. It is actually designed for slightly larger diameter threads however it is my choice for the application and has never let me down.

2700 is slow setting.

638 is when things need to be fixed permanently and it is the 638 that is used more than anything else, once set it is there for good however some localised heat does enable it to be cracked off. It works on threads as well as cylindrical applications and is quite pricey, especially considering it has a fairly short shelf life once opened.

2 pages all about thread lock ? I looked, expecting to find something totally different :-)

breacher wrote:2 pages all about thread lock ? I looked, expecting to find something totally different :-)

Yes, hopefully it will morph into chemical versus mechanical locking to include speciality nuts, washers and lock wire.

Dromia has a really good thread lock, appropriately used to shut down all criticism of his old smelly arquebuses... (arquebi ?)

Ah Lockwire, I have a coil of wire and my aircraft locking pliers from the days of running race 'bikes and still look for opportunities to use it

Ovenpaa wrote:We use 243, 2700 and 638. The 243 for rings and similar which might need to be removed at a later date. It is actually designed for slightly larger diameter threads however it is my choice for the application and has never let me down.

2700 is slow setting.

638 is when things need to be fixed permanently and it is the 638 that is used more than anything else, once set it is there for good however some localised heat does enable it to be cracked off. It works on threads as well as cylindrical applications and is quite pricey, especially considering it has a fairly short shelf life once opened.

any reason you go for 2700 and not 270? 270 is slightly stronger, and cheaper, other than that, they are almost exactly the same, viscosity and curing time, the only real advantage of 2700 is the H&S aspect