Revision as of 03:20, 1 February 2023

Marine

Rubber washer
Epoxy around threads [2]
Permatex #3, Tefgel, Duralac, Lanocote are good coats for preventing galvanic corrosion [3]
- Permatex #3 [4]
- Tefgel [5]

This article says that stainless is best for screwing in aluminum, but must minimize corrosion such as rubber washer between screw head and aluminum sheet. It does not talk about contact between threads of screw and the aluminum - it appears the head is more important than the threads. [6]
Stainless and galvanized are ok with aluminum, as long as not salty environment [7]
This forum says epoxy coat screws for aluminum [8]

Are deck screws compatible with aluminum? Some deck screws are polymer coated so they should work with aluminum if polymer doesn't srip
Deck screws are G185 or polymer coat [9]
Polymer coat on deck screws is epoxy [10] or ceramic [11]
Triple Coated Deck Screws - two coats over galvanized screw [12] but not for marine.

@@ Line 6: / Line 6: @@
 *Epoxy around threads [https://www.eng-tips.com/viewthread.cfm?qid=457431]
 *Permatex #3, Tefgel, Duralac, Lanocote are good coats for preventing galvanic corrosion [https://www.cruisersforum.com/forums/f55/does-loctite-protect-against-galvanic-corrosion-187978.html]
+**Permatex #3 [https://www.amazon.com/Permatex-80019-12PK-Aviation-Gasket-Sealant/dp/B000HBM3QQ?th=1]
+**Tefgel [https://www.amazon.com/Tef-Gel-TG-04-Anti-seize-Lubricant-Grade/dp/B00I8APPJU/ref=sr_1_2?gclid=CjwKCAiAleOeBhBdEiwAfgmXf6NJ67ASRsdNQpVAz5gQleoFjySU1X6BVAffTv2Nh4yL__qpVZkctBoCpe4QAvD_BwE&hvadid=616931742874&hvdev=c&hvlocphy=9023315&hvnetw=g&hvqmt=e&hvrand=7233038517835098175&hvtargid=kwd-2862344181&hydadcr=26612_11715053&keywords=duralac&qid=1675221600&sr=8-2]
 =Fasteners for Aluminum=