[Beowulf] Drive screw fixed with LocTite

Mark Kosmowski mark.kosmowski at gmail.com
Thu Jul 24 10:31:45 EDT 2008


> "David Mathog" <mathog at caltech.edu> writes:
>> A vendor who shall remain nameless graced us with a hot swappable drive
>> caddy in which one of the three mounting screws used to fasten the drive
>> to the caddy had been treated with blue LocTite.  This wasn't obvious
>> from external inspection, but the telltale blue glop was on the threads
>> when the screw finally let go and came out.  It was beginning to look
>> like power tools were going to be needed to get it out, and the screw
>> head was pretty badly torn up after removal.
>
> I believe a touch from a soldering iron will usually loosen LocTite,
> but that might also damage a drive, so be careful.

Blue Loctite is removable with just a little more force than needed
with mechanical lock washers.  It is critical to get a good, solid fit
with the tool to the bolt / screw though.  Were you using the correct
driver or just one that fit "good enough"?  Red Loctite is a permanent
Loctite.

>
>> This is the first time I have encountered a drive screw on a removable
>> drive which was, well, unremovable.  Is this a trend or are we just
>> dealing with a sadistic assembler?
>
> I've never seen it used with a drive, it is certainly not normal.
>
> Perry
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