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Re: Wheel bolts steel grade
[Re: deannn_20VT]
#1378250
17/09/2012 13:04
17/09/2012 13:04
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Joined: Sep 2006
Posts: 17,227 FCSS 01684 593187
Countrycruising
Club Rep Europe, member 914
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Club Rep Europe, member 914
Forum veteran
Joined: Sep 2006
Posts: 17,227
FCSS 01684 593187
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Yep The grade should be stamped in the top of the wheel bolt. There's four grades, 4-6, 8-8, 10-9 and 12-9, and 10-9 is the most popular. So you're bigger power now?
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Re: Wheel bolts steel grade
[Re: deannn_20VT]
#1379014
19/09/2012 22:55
19/09/2012 22:55
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sediciRich
Unregistered
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sediciRich
Unregistered
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Joe ,you have listed the tensile/proof stress grading but not the material. Dean all steel is carbon steel but the quantity varies as do alloying elements its huge subject in itself. Secondly if you were to make some long bolts out of this EN9 (medium carbon) grade stock then I'd assume it would be threaded on a lathe, but production bolts have rolled thread thus if the material was strong enough to meet say the 12.9 grade (its not incidentally anywhere near it) it would probably fail due to the thread cutting process.
If you need long bolts, don't use bolts, buy suitable length studs M12 metric fine and nuts. Thread lock the studs into cleanly tapped hub threads and then you can take nuts on and off without them coming out. Please dont play around with fasterners they are critical in this application so use something ready made from a reputable supplier (eg demon tweeks).
rich
Last edited by sediciRich; 19/09/2012 22:55.
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