Does a M5x10 bolt mean there is 10mm worth of thread, or its 10mm long (including head)
It means there's 10mm of shank on the bolt.
Unless it's a flat-head bolt or screw, then it's the overall length.
gotcha thanks. I have a flat head bolt for the kickstand mount to engine that needs to be replaced. so ill buy overall length. thanks
Just to be clear, this is what I mean by a flat-head bolt:
(http://www.mcmaster.com/param/images/scs/alloyflatfull.gif)
Quote from: Speeddog on October 14, 2009, 04:38:57 PM
Just to be clear, this is what I mean by a flat-head bolt:
(http://www.mcmaster.com/param/images/scs/alloyflatfull.gif)
OH. I got that one wrong. I Guess thats why the bolt guage has that shape wedged into it!
They're also called "countersink" bolts.
The simple way to think about it is the threaded diameter is 5mm on an M5, and the threaded length is 10mm on an M5x10.
A not so sure way to guess at the bolt size without removing one, is to go up one 'size' from the hex wrench you'd use on it. A M5 bolt (non buttonhead mind you) usually takes a 4mm allen wrench. An M8 takes a 6 usually, and so on (m6->5, and on and on)
Quote from: ato memphis on October 28, 2009, 04:42:16 PM
The simple way to think about it is the threaded diameter is 5mm on an M5, and the threaded length is 10mm on an M5x10.
A not so sure way to guess at the bolt size without removing one, is to go up one 'size' from the hex wrench you'd use on it. A M5 bolt (non buttonhead mind you) usually takes a 4mm allen wrench. An M8 takes a 6 usually, and so on (m6->5, and on and on)
Good tip...
but that doesn't address pitch. ;)
True. For that, its time to consult the manual. Small diameter are .8, intermediate are 1.0, big are 1.25. ;) (most of the time)
button head bolts use a much smaller allen wrench than the tip i gave earlier indicates, so on that one, you just have to suck it up, pull and measure, if you are ordering new stainless, alu, or ti.
Generally,
4x0.7
5x0.8
6x1.0
8x1.25
10x1.50
Not sure if Ducati uses 10x1.25, those are fairly common as well.
I know I can check, because I ordered the wrong size Ti bolts one time (wrong thread pitch) - It was for something big too, like M8's for caliper bolts or M10 for rearset/sidestand/case bolt...
THread chart
http://www.boltdepot.com/fastener-information/Printable-Tools/Metric-Hex-Bolt-Sizes.pdf (http://www.boltdepot.com/fastener-information/Printable-Tools/Metric-Hex-Bolt-Sizes.pdf)
and fastener type chart
http://www.boltdepot.com/fastener-information/Printable-Tools/Type-Chart.pdf (http://www.boltdepot.com/fastener-information/Printable-Tools/Type-Chart.pdf)
and a ruler with a gauge
http://www.boltdepot.com/thread-gauges.aspx (http://www.boltdepot.com/thread-gauges.aspx)
For the US guys, we now have a Probolt-Usa website, which I am thrilled about. Also check out racebolts.com, ballerbolts.com, and I use boltdepot above occasionally as well.