LOCTITE 263 Automotive Threadlocker Red – High Strength Thread Lock, General Purpose Applications, Oil Tolerant, Fluorescent - 36 ml, 1 Pack

This stuff is amazing. I used it on a bathroom faucet handle that fell off and it’s perfectly restored.

Does a good job at keeping fasteners tight. You will luckily require some head to disassemble them after it sets up.

I used this #263 threadlocker to apply to and to hold the four machine threaded panhead fastener screws to affix a metal vertical Mailboss post sleeve over a wood 4" x 4" post to a two mail box spreader by Mailboss. We live in a windy area where typical winds are 12 to 16 mph and gusts reach 40 to 45 mph and higher. The specifications mentioned automobile vibrations, so I equated our nearly constant wind as being directly applicable. The instructions by Loctite are embarrassingly lousy. One source informed me that when using Loctite #263 no primer is required, so I thought I was good to go and this was the correct product for my application, but when my Amazon purchase arrived, the instructions said different. Step #1: "Clean and dry parts with LOCTITE Primer". All of the cost prohibitive, large volume Loctite primers, seemed to include an accelerant which dramatically speeds up the curing time. After doing some research for common ingredients, I soaked the fasteners in acetone, removed them to air dry, and then wiped their threads off with a paper towel before applying the #263 Threadlocker. I used Q-Tips dipped in acetone to clean the internal female threads of the vertical sleeve and then wiped them dry and noticed grey residue on each of the Q-Tips. I had bought #271 Loctite but returned it after reading #263 did not require primer and was better for vibration applications. The preparation and the assembly went smooth enough and time will certainly tell.

If you use a lot of Locktite, this size is perfect. It's large enough that you're not always running out but small enough that you don't have to worry about the shelf life. The Amazon price is also the best I've found anywhere. Be sure to shake it before use. Doesn't work well at all if you forget.

Great Product and value! Have always used name-brand thread locker such as Loctite. Has never failed me or let me down. I have never used the off-brand thread lockers, so I have no opinion on those. But I know from personal use this red Loctite works like a dream. This is the perfect size for small projects, a the size is easy to apply. I use the small tube for RC car and truck projects.

It's not as permanent as they say, but good enough. I particularly like that you can use it without a primer on slightly oily fasters.

Worked well. A bolt on my excercise bike kept coming loose, it took care of the problem.

Awesome size! Now my bolts won’t back out!