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Joined: Jan 2002
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Sidelock
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Sidelock
Joined: Jan 2002
Posts: 5,983 |
I'm curious as to your preferred way to apply Lock-tite(removable, of course) on screws that love to work loose. Screw from top tang to trigger plate, in particular, the one under the top lever. I've read suggestions that it be applied to the underside of the counter-sinking head, rather than to the threads. Your ideas?
TIA
> Jim Legg <
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Joined: Jan 2002
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Sidelock
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Sidelock
Joined: Jan 2002
Posts: 6,533 Likes: 162 |
On guns, I have only used them on the screws on the front sights, Jim. I had a Ruger .22 auto that I bought for my son and the first time we shot it, the screw from the front sight started to back out. I used the regular Locktite (red) and put it on the threads. It hasn't backed out since. I think the blue is more permanent, so it depends on whether or not you ever want to get the screw out again. We used a lot of it at the steel mill I worked at and I have only heard of putting it on the threads. I have never heard of putting it- only under the screw head. I will ask a machinist friend of mine, though and see what he says. Maybe someone else on here will know more than I. Good luck.
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Joined: Apr 2004
Posts: 743
Sidelock
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Sidelock
Joined: Apr 2004
Posts: 743 |
Jim,
Red is the tougher not blue. Red can be removed with heat.
My gunsmith friend only puts it on the screw and it doesn't take much.
Don't make the mistake I did years ago, put so much it dripped into the action of a ruger 10/22 and prevented it from functioning! Boy did I feel stupid.
Jerry
PS I looked for you at Vegas and guys at the LeFever both told me I was always a few steps behind you.
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Joined: Feb 2004
Posts: 13,883 Likes: 19
Sidelock
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Sidelock
Joined: Feb 2004
Posts: 13,883 Likes: 19 |
There are a variety of Loc-tite thread sealants. The typical consumer product line has about 3 different sealants. The first level of thread sealant is blue, then a red, and a green that fits in the middle.
The industrial product line has about 4 pages of diffent types, some of which often get into our hands thru places like Brownells, MSC, Rutland, McMaster-Carr, Grainger, etc.
I've used it under the head before, but it was in conjunction with the thread. I see no reason it couldn't be used just under the head if desired. It could be very effective in a counterbored or countersunk head fastener under the head only.
Last edited by Chuck H; 02/10/10 04:35 AM.
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Joined: Mar 2003
Posts: 578
Sidelock
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Sidelock
Joined: Mar 2003
Posts: 578 |
Years ago while attending S&W Armours school in Springfield, Ma. we were advised to use clear fingernail polish. The front screw on the rear sight would work loose, so I started useing clear fingernail polish and worked great, when mounting a scope I use it on the base screws. You can break it loose without heat, yet I've never had it loosen up on me. I keep several bottles handy and if I have a loose screw problem I use it.
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Joined: Feb 2004
Posts: 13,883 Likes: 19
Sidelock
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Sidelock
Joined: Feb 2004
Posts: 13,883 Likes: 19 |
I beleive people that are afraid that a thread sealant will make it impossible to remove or damage the screw slot upon removal have not used some of the low strength professional loctite products.
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Joined: Feb 2008
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Sidelock
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Sidelock
Joined: Feb 2008
Posts: 11,805 Likes: 678 |
Chuck is exactly right. There are dozens of Lok-tite products for many different applications/strength/temperature. I printed out the whole list from their website several years ago. The commonly found blue will probably do just fine. Start with a very small amount on clean threads. Use a bit more if the smaller amount works loose. Even the blue can be tough to get loose if you go hog wild and douse the threads, but it will also soften up with a little heat.
Voting for anti-gun Democrats is dumber than giving treats to a dog that shits on a Persian Rug
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Joined: Jan 2002
Posts: 5,188 Likes: 69
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 5,188 Likes: 69 |
Here's a link to download the chart, for gun purposes 222M and 242 are best. Loctite Link
My problem lies in reconciling my gross habits with my net income.
- Errol Flynn
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Joined: May 2006
Posts: 810 Likes: 15
Sidelock
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Sidelock
Joined: May 2006
Posts: 810 Likes: 15 |
We have sold the stuff for about 30 years. Loc-tite is an anerobic compound that cures in the abscense of air. It needs to be on the threads and in contact with other threads to work properly. It's not impossible to put it on the underside of the heads and have it hold, but there would need to be a lack of oxygen for it to cure. The preferred method is on the threads.
-Shoot Straight, IM
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Joined: Jul 2003
Posts: 136
Sidelock
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Sidelock
Joined: Jul 2003
Posts: 136 |
If you want to use a product on the non threaded surface Loctite 609 or any of the retaining compound family might be an option. This family is made for press or slip fitting cylindrical non threaded items.
In the thread locker compounds the general list is:
Purple #222 low strength for up to 1/4"
Blue #242 Medium strength 1/4" to 3/4"
Red #271 High strength up to 1" permanant- heat removal
Green #290 Medium penetrating for srew already set up to 1/2"
al
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