Getting rid of stainless fasteners
01-11-2005, 06:19 AM
#21
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Re: Getting rid of stainless fasteners
From a Grade 8 spec listing:
Screws meet SAE J429. Rockwell hardness is C33-39 with a minimum tensile strength of 150,000 psi. Made of medium-carbon alloy steel that has been quenched and tempered. Screws are grade marked on top of head (six radial lines indicate Grade 8).
Screws meet SAE J429. Rockwell hardness is C33-39 with a minimum tensile strength of 150,000 psi. Made of medium-carbon alloy steel that has been quenched and tempered. Screws are grade marked on top of head (six radial lines indicate Grade 8).
01-11-2005, 06:50 AM
#22
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Re: Getting rid of stainless fasteners
all,
Be careful when buying fasteners. I'm in the defense industry and we were burned badly by a supplier who sold us Mil Spec Grade 8 fasteners with certifications. There is a lot of counterfeit hardware out there that comes from Taiwan and others.
Our bad hardware was destined for use to secure the cannon in the Abrams tank turret.
ed
Be careful when buying fasteners. I'm in the defense industry and we were burned badly by a supplier who sold us Mil Spec Grade 8 fasteners with certifications. There is a lot of counterfeit hardware out there that comes from Taiwan and others.
Our bad hardware was destined for use to secure the cannon in the Abrams tank turret.
ed
01-12-2005, 12:16 AM
#23
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Re: Getting rid of stainless fasteners
Well I odered some socket head ultra coated bolts.
How can I tell where they are made and iff they are up to snuff?
I got them from McMater-Carr as discussed above
How can I tell where they are made and iff they are up to snuff?
I got them from McMater-Carr as discussed above
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