So this has happened to me multiple times and gets me so pissed. Working on my bike and mount something with a Ss bolt and nylock. Starts getting hard to turn wrenches....that's when I start trying to reverse it out and it just locks up solid. I've had to either snapped the bolt by torquing the **** out of it or last night I had to slice nuts in half with grinder. Am I dealing with cheap China hardware or what? I'm to the point now that I'm overly cautious when using them.

 

Must be cheap hardware. I can't remember the last time I had that problem.

 

Cheap hardware, a lot of the import crap uses 303 stainless that tends to be soft and will gall up the threads. Check the specs before buying you want 18-8 or 316 grade when dealing with stainless fasteners. Oh and don't over torque, strong arming is the number one bolt killer.

 

I haven't had this happen in a long long time.
When it did I had gotten the wrong nuts and the tread pitch and size were just a little off.

Was trying to put a 8mm metric nut on an 5/16 SAE bolt.

WP

 

Put a few drops of oil or grease on the bolt. Lube goes along way when using SS on SS. SS galls up real easy when heat is present. Just the friction of a nut spun on threads can cause it. As TB said, don't over torque. Once the threads are deformed the slightest, its all over.

Use 303 SS everyday, no problem. Lube!

 

316 ss bolts, locks, and nuts with some lube, no more probs .

 

Good lookin out guys. Thanks. No more going at it dry....lubricate
No worse momentum crusher like having to cut off a bolt you just put on around painted parts. FML

 

Yup , the dremel tool has gotten a work out a time or two.......

 

Smaller bolts (1/4" & under) you can usually get by without lube stainless on stainless, if you use hand tools. Anything bigger gets dicey depending on thread class. The threads will "cold" weld themselves and there is no way to save them at that point.
Drop by your local Fastenal or similar fastener supply company and they can set you up with the correct lube.
We build equipment that uses lots of stainless fasteners. Sometimes we have the supply house provide pre-lubed fasteners, especially if they are going to be installed with power tools.

 

Used to build equipment with all stainless fasteners, and it is very common for them to do that, even with quality fasteners. I never put together stainless with out anti-seize.