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General Information => General => Topic started by: stewardc on December 29, 2007, 05:38:56 am

Title: Stainless fasteners
Post by: stewardc on December 29, 2007, 05:38:56 am

Whenever I work on the truck, I like to replace the bolts I use with stainless bolts. Does this create a corrosion problem (dissimilar metals) if I were to change oil pan bolts, for instance??

Title: Stainless fasteners
Post by: jimfoo on December 29, 2007, 06:55:20 am

Only if you have an aluminum oil pan.

Title: Stainless fasteners
Post by: QuickTD on December 29, 2007, 07:06:52 am

No real corrosion problems that I can forsee. You should be aware that stainless bolts are not as strong as alloy steel bolts, particularly in fatigue strength. This is more of a concern on heavily stressed areas, such as in the suspension or engine mounts. I wouldn't worry much about pan bolts.

Title: Stainless fasteners
Post by: stewardc on December 29, 2007, 07:25:57 am

Thanks, guys. The only bolts that will go stainless are small, visible ones. Any loadbearing ones will probably go titanium :P

Title: ss bolts
Post by: FineFrank on December 29, 2007, 07:39:30 am

Remember to use the right antiseize on them, too. SS bolts REALLY need it because they break a bit easier than carbon steel.

Title: Re: ss bolts
Post by: stewardc on December 29, 2007, 07:47:38 am

Quote from: "FineFrank"

Remember to use the right antiseize on them, too. SS bolts REALLY need it because they break a bit easier than carbon steel.

What is the best antiseize to use?

Title: Stainless fasteners
Post by: Pat Dolan on December 30, 2007, 06:12:23 am

Stainless bolts in steel or cast iron do not need anti-seize compound.  However, stainless in stainless (i.e. nut-and-bolt joint) ABSOLUTELY REQUIRES anti seize compound.  There are usually three different ones:  high temp, low temp and stainless compatible.  Any supplier that can make those differentiations is selling you a good, commercial grade product.