DIY camber bolts! Info on strength of bolts! Someone please translate!!
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From: ATL to SAV to ORL, USA
DIY camber bolts! Info on strength of bolts! Someone please translate!!
I posted this is a non-auto forum:
I purchased some 10m 1.25 X 40mm bolts from ACE hardware and the guy said the bolts were pretty hard, but not quite like steel.
Anyone know what the 8 8 means that is stamped on the head of the bolt? Or is there anyway to find out how strong these bolts are or what they are made out of?
I lowered my car and these longer bolts and washers are to replace the OEM ones since I have 3 degrees of negative camber...
The link to what I am doing ==> HERE
Response someone left:
ISO property classes for steel bolts, screws, studs and nuts
The strength of standard ISO metric steel bolts, studs and nuts is readily identified by means of a numerical code.
Property classes for steel bolts, screws and studs
The code is comprised of two numbers separated by a dot. This dot is not a decimal marker but is merely a means of separating the two parts of the code. The number to the left of the dot when multiplied by 100 provides an indication of the Ultimate Strength in Mega Pascals (MPa) while the number to the right when multiplied by 10 times the preceeding number gives the Yield Strength (Mega Pascals - MPa) or Stress at 0,2% Permanent Set (MPa) depending on the property class; e.g. 8,8
Ultimate Strength
8 x100 = 800MPa
Yield Strength or Stress at 0,2% permanent Set
8 x 8 x 10 = 640 MPa
Property class Designation for Nuts
The corresponding code for nuts is a single number and is derived from the left hand number of the property class of the bolt, screw and stud. This number when multiplied by 100 indicates the Proof Load Stress of the nut in MPa. Thus, for the bolt of property class 8,8 in the above example a nut of property class 8 is required. This nut will have a Proof Load Stress of 8 x 100 = 800 MPa
In practice only standard threaded fasteners in the high tensile property classes, i.e. property class 8,8 and above are required to be marked with the appropriate code.
http://mdmetric.com/tech/u19e2.htm
Thanks for any info on this! From what the person said, you think the bolts I have are strong enough?? I'm going to be using about 4-5 washers on each bolt
[Modified by LX98Civic, 5:54 PM 4/11/2002]
[Modified by LX98Civic, 5:54 PM 4/11/2002]
I purchased some 10m 1.25 X 40mm bolts from ACE hardware and the guy said the bolts were pretty hard, but not quite like steel.
Anyone know what the 8 8 means that is stamped on the head of the bolt? Or is there anyway to find out how strong these bolts are or what they are made out of?
I lowered my car and these longer bolts and washers are to replace the OEM ones since I have 3 degrees of negative camber...
The link to what I am doing ==> HERE
Response someone left:
ISO property classes for steel bolts, screws, studs and nuts
The strength of standard ISO metric steel bolts, studs and nuts is readily identified by means of a numerical code.
Property classes for steel bolts, screws and studs
The code is comprised of two numbers separated by a dot. This dot is not a decimal marker but is merely a means of separating the two parts of the code. The number to the left of the dot when multiplied by 100 provides an indication of the Ultimate Strength in Mega Pascals (MPa) while the number to the right when multiplied by 10 times the preceeding number gives the Yield Strength (Mega Pascals - MPa) or Stress at 0,2% Permanent Set (MPa) depending on the property class; e.g. 8,8
Ultimate Strength
8 x100 = 800MPa
Yield Strength or Stress at 0,2% permanent Set
8 x 8 x 10 = 640 MPa
Property class Designation for Nuts
The corresponding code for nuts is a single number and is derived from the left hand number of the property class of the bolt, screw and stud. This number when multiplied by 100 indicates the Proof Load Stress of the nut in MPa. Thus, for the bolt of property class 8,8 in the above example a nut of property class 8 is required. This nut will have a Proof Load Stress of 8 x 100 = 800 MPa
In practice only standard threaded fasteners in the high tensile property classes, i.e. property class 8,8 and above are required to be marked with the appropriate code.
http://mdmetric.com/tech/u19e2.htm
Thanks for any info on this! From what the person said, you think the bolts I have are strong enough?? I'm going to be using about 4-5 washers on each bolt
[Modified by LX98Civic, 5:54 PM 4/11/2002]
[Modified by LX98Civic, 5:54 PM 4/11/2002]
Thread Starter
Honda-Tech Member
Joined: Mar 2002
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From: ATL to SAV to ORL, USA
Re: DIY camber bolts! Info on strength of bolts! Someone please translate!! (Sleeper)
8.8 = US grade 5
10.9 = US grade 8
Use the 10.9 stamped stuff. You can pic em up at pepboys.
10.9 = US grade 8
Use the 10.9 stamped stuff. You can pic em up at pepboys.
New User
Joined: Feb 2001
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From: san luis obispo, ca
Re: DIY camber bolts! Info on strength of bolts! Someone please translate!! (TypeSH)
This is the part of your car that holds you on the road. DO NOT go cheap and use Grade 5 bolts. You don't want to be in the car when one of those snaps off. Find the 10.9 / Grade 8 bolts or don't do this on your own.
Thread Starter
Honda-Tech Member
Joined: Mar 2002
Posts: 7,506
Likes: 0
From: ATL to SAV to ORL, USA
Re: DIY camber bolts! Info on strength of bolts! Someone please translate!! (dbman96)
This is the part of your car that holds you on the road. DO NOT go cheap and use Grade 5 bolts. You don't want to be in the car when one of those snaps off. Find the 10.9 / Grade 8 bolts or don't do this on your own.
