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Added 1-14-12
Updated 6-2-17
Smith Brothers Services on:
Bolt Head Markings
I am not talking about the lines on the heads of bolts that indicate what Grade the fastener is. I am talking about the letters, numbers, and symbols. There is a link on this page that will take you to (a document on) the US Patent & Trademark Office where you can download the file and look at all the various markings and where the bolts are made. It seems the most common marking we se these days is JH. Meyer uses them in all their Mounting Carton, PAF Carton, Hydraulic Carton, and CLF Carton hardware kits, Western uses them too. Tractor Supply Co sells them by the pound.
Are you surprised that the JH bolts are made in Taiwan? I added the triangle marking because when you buy a hardware kit from us (that WE put together), or a new King Bolt, you will NOT be getting a JH bolt. About 99% of the bolts we use in he shop have the triangle (aside from hardware provided in kits from an OEM). But hey, if we sell you a JH bolt, it is definitely OEM....
Here is the link to the .pdf file: http://www.uspto.gov/trademarks/law/FQA_Registry.pdf
2017 - Well we have much more to add now. It seems we are finding more of a variety of China or Taiwan bolts now in OEM hardware kits. I guess they found an even cheaper source. Lets be honest, they would not switch vendors to pay more, and if they wanted to ensure real quality, they would not be sourcing hardware in China and Taiwan in the first place, now would they? In their (somewhat) defense, it is very common today for manufacturers to find cheaper materials, rather than raise their prices. Some do both, but cheaper materials is a "behind the scenes" endeavor.
We have seen two new markings recently, and one has proven at least once to be a failure. The one looks like 911, but it is upside down. That is the one that failed during installation. It never got tight, and then it snapped. I should add that we installed at least a few dozen of them without failure, but I can say in my entire life I never had a bolt with a triangle on the head snap when tightening it. I am not saying if I got a cheater on it and tried to snap it I couldn't, I am saying during installation one has never snapped. So her is the "911", hmmm look where it is made...
We posted about it when it happened on our Facebook page. We also posted the following image showing the bolts WE
use in the shop, the triangle on the head, in the package marked "Made in Canada".
Another we have seen, has JDF on the head. It too is made in China.
And finally since I know people are coming here because they do not know what the lines on the heads of bolts mean, here is an example of two bolts Made in Canada.
One is Grade 5, and one is Grade 8. The color (coating) does not matter. Grade 5 has 3 lines on the head, and Grade 8 has 6 lines on the head.
Since we sell and install Meyer Snow Plows, we stock our bins with what we use. Maybe it is what you are looking for? We have an online store, and we ship daily. Because plows require larger hardware, that is what we stock. Just about every brand of commercial plow on the market today uses 1/2", 5/8" and 3/4" hardware on the plows themselves and to attach the plow mounts to the vehicles, so that is what we stock and offer. Because something has to give, plows use Grade 5 hardware to attach to vehicles. Plow manufacturers WANT the bolts to shear to protect the vehicle. So don't go all gung ho and use Grade 8 if you are installing a plow! Better to shear a bolt than to shift a frame rail. there has to be a weak link somewhere. Maybe you would rather find out the hard way, as in after a hard hit your door will no longer open! No joke, I have seen it.
1/2" Coarse Thread Bolts
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SKU: M21943-AM
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SKU: M20095-AM
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SKU: M20097-AM
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SKU: M20099-AM
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SKU: M20098-AM
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SKU: M20101-AM
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SKU: M20103-AM
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SKU: M20102-AM
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SKU: M20105-AM
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SKU: M20106-AM
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5/8" Coarse Thread Bolts
SKU: M20139-AM
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SKU: M20140-AM
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SKU: M20141-AM
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SKU: M20143-AM
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SKU: M20142-AM
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SKU: M20144-AM
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SKU: M20145-AM
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3/4" Coarse Thread Bolts
SKU: M20164-AM
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SKU: M20165-AM
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SKU: M20172-AM
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Smith Brothers Services, LLC
3212 State Route 94
Suite 9
Franklin, NJ 07416
(973) 209-7569
sales@smithbrothersservices.com
Entire site Copyright 2006 - 2017 Smith Brothers Services, LLC All Rights Reserved
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