SRP alloy crank bolts?

Pete Biggs said:

-- For square taper cranks --

I picked up some of these cheap, now I'm wondering whether to use
them (or to carry on using them, actually).

I've done some Googling and read Jobst Brandt's theory about the crank
squirming on the spindle under strong load and pressing against the
bolt head in an irregular way, potentially causing the bolt to
fatigue. BUT JB has never used aluminium crank bolts himself. Now I
wouldn't mind some good old British info/advice ...about this
American product :-o

I await the results of your trial Pete.

Pete Biggs said:

-- For square taper cranks --

I picked up some of these cheap, now I'm wondering whether to use them (or
to carry on using them, actually).

I've done some Googling and read Jobst Brandt's theory about the crank
squirming on the spindle under strong load and pressing against the bolt
head in an irregular way, potentially causing the bolt to fatigue. BUT JB
has never used aluminium crank bolts himself. Now I wouldn't mind some
good old British info/advice ...about this American product :-o

Has anyone reading this had any SRP alloy crank bolts fail, after fitting
them correctly*?

* Fit cranks using steel bolts, then fit the alloy bolts afterwards, not
over-torquing.

No comments about the weight saving being so small and pointless please.
I already know that! :-D What you might not know is how nice the dust
covers look and how mad I am... well, you might've figured out the second
half of that by now :-)

I've used X-Lite alloy crankbolts for years with no problems. Never use
them to *fit* the crank, just to hold it in place. Threadlock is
recommended.