Need caliper bolts recommendations

Started by Pedro-bot, November 04, 2010, 10:18:56 AM

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junior varsity

had my fair share of 'misadventures' with that this year, so i now run that fund dry by buying titanium.

Pedro-bot

Quote from: BlackKat on November 07, 2010, 04:34:19 AM
I just updated the whole front end worth of bolts using stainless that were on the shelf at Fastenal...I think it cost me a whopping $8.00 or so...It was like 16 bolts that included the calipers. Don't use those black ones from the hardware store....just crap!

Stopped by Fastenal today. A box of 50 runs $13.00.
They only sell them in bulk. At $13 what the heck. I bought them. Thanks.  [thumbsup]
1999 M750 AKA Little Blue Monster, 2002 S4, 2006 Sport 1000, 2008 Sport 1000, 2005 749s, 2018 R NineT Urban GS

BlackKat

Must differ from location to location. I buy ones and twos at at time quite frequently. Glad you went with the stainless!

hcomp

Not to rain on anyone's parade, but a 316 stainless bolt is not even near the tensile strength of a class 8.8 bolt.  In fact stainless is quite weak compared to carbon or alloy steel. 316 stainless annealed has a tensile strength of 85 KSI, where as an 8.8 carbon steel bolt has a tensile strength of 120 KSI.

and then there is titanium.....A.M. has the right idea....

6AL4V Titanium Bolts - 145 KSI tensile strength.. 160 KSI if heat treated.
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Pedro-bot

Eh? Speak English man! I'm a simple gear head with no technical expertise or background.   :-X

Dunno, but the bolts I picked up are rated at 12.9 tensile strength. OEM caliper bolts I've been told are rated at 10 or 12.
1999 M750 AKA Little Blue Monster, 2002 S4, 2006 Sport 1000, 2008 Sport 1000, 2005 749s, 2018 R NineT Urban GS

junior varsity

the jump from 85 to 120 ksi is 35,000 psi. Its a big difference.