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mjf454
post Jan 13 2005, 12:27 AM
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Are there different grades of metric bolts? I need longer spindle bolts, and I want the right strength bolt.
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Curmudgeon
post Jan 14 2005, 06:36 PM
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Part of the below statement is from:

http://www.coastfab.com/torque&fastener.html

There is a way to test bolts by exceeding there torque spec. until the bolt reaches its yield point (the point at were bolt will undergo "plastic" deformation (permanent stretch). Bolts for critical applications should be test-torqued to determine the point of measurable permanent stretch. As a rule, approximately 90% of this value will give the best performance in a bolted assemble.

Now if the bolt deforms below spec. it is not what it is purported to be.
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Posts in this topic
mjf454   Metric bolt question   Jan 13 2005, 12:27 AM
sgarnett   Yes, there are different grades: I think Metric P...   Jan 13 2005, 12:44 AM
rmackintosh   oh YES THERE IS...ask me how I know.... G...   Jan 13 2005, 12:48 AM
mjf454   Thank you. The stock one says 10.9 on it, the chea...   Jan 13 2005, 12:48 AM
rmackintosh   8.8 = baaaaaad!   Jan 13 2005, 12:50 AM
mjf454   Wow I type slow. Randy, that looks like hell I al...   Jan 13 2005, 12:52 AM
mitchntx   That must be a heavy hopped lager ale if it shatte...   Jan 13 2005, 01:37 AM
mjf454   QUOTE (rmackintosh @ Jan 12 2005, 04:48 PM) I...   Jan 13 2005, 02:53 AM
Curmudgeon   Note there is counterfeit hardware out there posin...   Jan 13 2005, 04:27 PM
mjf454   Thanks for the links. I ran all over town today lo...   Jan 13 2005, 11:32 PM
robz71lm7   QUOTE (Curmudgeon @ Jan 13 2005, 11:27 AM)Not...   Jan 14 2005, 12:28 AM
35th_Anniversary_AS_Camaro_SS   QUOTE (robz71lm7 @ Jan 13 2005, 06:28 PM)So s...   Jan 14 2005, 04:09 AM
rmackintosh   QUOTE (35th_Anniversary_AS_Camaro_SS @ Jan 13...   Jan 14 2005, 06:34 AM
robz71lm7   QUOTE (35th_Anniversary_AS_Camaro_SS @ Jan 13...   Jan 14 2005, 02:20 PM
Curmudgeon   Part of the below statement is from: http://www.c...   Jan 14 2005, 06:36 PM
Jon A   QUOTE (rmackintosh @ Jan 13 2005, 10:34 PM)I ...   Jan 14 2005, 06:59 PM
slowTA   Since we're talking about bolts... I saw a web...   Jan 15 2005, 07:38 PM
35th_Anniversary_AS_Camaro_SS   Never heard of different kinds of taps. Typicall t...   Jan 16 2005, 01:57 AM
slowTA   Somehow I found the link. They're saying that...   Jan 16 2005, 02:19 AM
94bird   I took a SAE fastener class last year and we got a...   Jan 17 2005, 01:47 AM

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