Not the ones I dealt with! The screws were alloy. Dzus were steel, but the cups were put on with alloy rivets (we didn't use very many, either). Even the nut plates on "blind" assemblies were alloy. What little steel fastners we DID use, were plated, zinc primed, and painted, and the nut plates on "blind" assemblies were alloy. While SOME assemblies HAD to be steel, they were primed, painted, and installed with neoprene or caulking to prevent dissimilar metals touching.
That said - corrosion is a BIG concern onboard a ship. ANYTHING that can be done to protect the ship and aircraft is WELL worth the effort! It's a NASTY enviroment. That's why sailors are taught to paint in boot camp! LOL!
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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