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Replacement Keys for a Trailer Lock w/ an "M" Stamped On the Core  

Updated 04/03/2025 | Published 03/24/2025



Question:

I misplaced my keys to my trailer. Keyed alike with an M on locks. Do you have replacement?

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Expert Reply:

Hey Becky, that could be a Fastec lock you have. Are there any numbers stamped on the lock core? For instance, if you had let's say 315 on the core, then you could use the Replacement Key for FIC Locks # GL54FR as a replacement.

Let me know if you have any more info on those locks, and I'd be happy to dig a bit deeper!

expert reply by:
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Bryce D
Becky profile picture

Becky

4/3/2025

All I see is an M. I had ordered a key MK9901 and it does not work.

Bryce D. profile picture

Bryce D.

4/3/2025

@Becky Hmm, seeing as though you don't have any real way to find out what you have you might be better off drilling out the lock and replacing it all together with something like the Replacement Cam Lock Cylinder for RVs # 295-000004.
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