Blue Anodized Aluminum Locknut (AN 924), -12 Size

Yes indeed, this locknut is crafted from anodized aluminum, which provides good corrosion resistance, especially in demanding industrial settings.

Corrosion resistance is built into the anodized aluminum construction on this one, so it holds up better than plain steel in environments where moisture or chemical exposure is a concern. It's made specifically for bulkhead fitting applications, and the -12 dash size is right there in the specs. Eaton Aeroquip manufactures it to tight tolerances, so fit and sealing integrity shouldn't be an issue on a standard -12 bulkhead setup.