The 416 grade offers excellent machinability, good resistance to galling, and mild corrosion resistance. stainless steel rods are offered in a range of finishes. mill finish stainless steel, also known as unpolished or #1, has a dull, rough surface. the #2b smooth finish When assembling aluminum panels, you want to use the strongest fasteners possible to ensure that your project holds together in high winds and winter weather. despite the dissimilar metals and risk of corrosion, stainless steel screws are the recommended fastener for aluminum panels.
Feb 19, 2002 · the danger is that oxide removed in the bolt area (eg. by exposing scratching inside the bolt holes)will set up a very active corrosion cell (small anode). this is commenly seen in bottoms of aluminum boats where people have used s/steel bolts and the bolts float around an oversised corroded bolthole.
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