How can I tell if these bolts are stainless steel or not? https://i.postimg.cc/8cMgwY4Y/bolts.jpg
All I know is they're heavy feeling - and magnetic.
But how do I know if they're stainless short of purposefully rusting them
by dipping them in acid?
How can I tell if these bolts are stainless steel or not? https://i.postimg.cc/8cMgwY4Y/bolts.jpg
All I know is they're heavy feeling - and magnetic.
But how do I know if they're stainless short of purposefully rusting them
by dipping them in acid?
How can I tell if these bolts are stainless steel or not? https://i.postimg.cc/8cMgwY4Y/bolts.jpg
All I know is they're heavy feeling - and magnetic.
But how do I know if they're stainless short of purposefully rusting them
by dipping them in acid?
How can I tell if these bolts are stainless steel or not? https://i.postimg.cc/8cMgwY4Y/bolts.jpg
All I know is they're heavy feeling - and magnetic.
But how do I know if they're stainless short of purposefully rusting them
by dipping them in acid?
Larry Wolff wrote:
How can I tell if these bolts are stainless steel or not?
https://i.postimg.cc/8cMgwY4Y/bolts.jpg
All I know is they're heavy feeling - and magnetic.
But how do I know if they're stainless short of purposefully rusting them
by dipping them in acid?
If the pic is of the actual bolts...
The bolts do not look like stainless - they look like low quality steel bolts plated with zinc.-a The manufacturing looks poor.
IMO, they are the 13 cent variety, not the $1.13 variety.-a Same for the nuts. They are the 5 cent variety, not the 55 cent variety.
There is low quality stainless but I have never seen that used in nuts
and bolts.-a Threaded pieces are normally 18-8 or better and have better machining.
On 11/6/24 5:49 PM, Paul in Houston TX wrote:
Larry Wolff wrote:
How can I tell if these bolts are stainless steel or not?
https://i.postimg.cc/8cMgwY4Y/bolts.jpg
All I know is they're heavy feeling - and magnetic.
But how do I know if they're stainless short of purposefully rusting
them
by dipping them in acid?
If the pic is of the actual bolts...
The bolts do not look like stainless - they look like low quality
steel bolts plated with zinc.-a The manufacturing looks poor.
IMO, they are the 13 cent variety, not the $1.13 variety.-a Same for
the nuts. They are the 5 cent variety, not the 55 cent variety.
There is low quality stainless but I have never seen that used in nuts
and bolts.-a Threaded pieces are normally 18-8 or better and have
better machining.
Whar are the tip-offs in the picture that they ared ow quality?
Colour Sergeant Bourne wrote:
On 11/6/24 5:49 PM, Paul in Houston TX wrote:
Larry Wolff wrote:
How can I tell if these bolts are stainless steel or not?
https://i.postimg.cc/8cMgwY4Y/bolts.jpg
All I know is they're heavy feeling - and magnetic.
But how do I know if they're stainless short of
purposefully rusting them
by dipping them in acid?
If the pic is of the actual bolts...
The bolts do not look like stainless - they look like low
quality steel bolts plated with zinc.-a The manufacturing
looks poor.
IMO, they are the 13 cent variety, not the $1.13
variety.-a Same for the nuts. They are the 5 cent variety,
not the 55 cent variety.
There is low quality stainless but I have never seen that
used in nuts and bolts.-a Threaded pieces are normally
18-8 or better and have better machining.
Whar are the tip-offs in the picture that they ared ow
quality?
It's difficult to say for sure with out viewing the head
markings or seeing better photos.-a It could be the small
pixel count of the photo or the zinc plating, but... the
machining just does not look crisp / sharp. -a-a There are
striations on the bolt head and nut that are not seen on
quality bolts and nuts.-a The nut appears to be much thinner
than a good quality nut.
It's difficult to say for sure with out viewing the head markings or
seeing better photos. It could be the small pixel count of the photo or
the zinc plating, but... the machining just does not look crisp / sharp.
There are striations on the bolt head and nut that are not seen on
quality bolts and nuts. The nut appears to be much thinner than a good >quality nut.
On 11/6/24 5:49 PM, Paul in Houston TX wrote:
Larry Wolff wrote:
How can I tell if these bolts are stainless steel or not?
https://i.postimg.cc/8cMgwY4Y/bolts.jpg
All I know is they're heavy feeling - and magnetic.
But how do I know if they're stainless short of purposefully rusting
them
by dipping them in acid?
If the pic is of the actual bolts...
The bolts do not look like stainless - they look like low quality
steel bolts plated with zinc.-a The manufacturing looks poor.
IMO, they are the 13 cent variety, not the $1.13 variety.-a Same for
the nuts. They are the 5 cent variety, not the 55 cent variety.
There is low quality stainless but I have never seen that used in nuts
and bolts.-a Threaded pieces are normally 18-8 or better and have
better machining.
Whar are the tip-offs in the picture that they ared ow quality?
Paul in Houston TX <Paul@Houston.Texas> wrote:
It's difficult to say for sure with out viewing the head markings or >>seeing better photos. It could be the small pixel count of the photo or >>the zinc plating, but... the machining just does not look crisp / sharp.
There are striations on the bolt head and nut that are not seen on >>quality bolts and nuts. The nut appears to be much thinner than a good >>quality nut.
There are good fasteners, crappy fasteners, and the very worst, electrician-grade fasteners.
Striations are a bad sign and so are threads that aren't cut sharply, or
even worse appear to be rolled rather than cut.
ALL Quality bolts have roll-formed threads. Cut or in this case
"torn" or "chewed" threads are almost exclusively the domain of cheap
crappy fasteners.
These are definitely NOT rolled threads and appear to have been cut
with a worn out harbor fright dieset - - -
cheap-assed chinese electro-zinc plated grade 2 would be my guess.
What markings *(if any) on the head?
On 11/7/2024 12:48 PM, Clare Snyder wrote:
cheap-assed chinese electro-zinc plated grade 2 would be my guess.
What markings *(if any) on the head?
I never thought of looking at the head of the bolt, which does have soem "secret code" written on it as you can see in the photo of the head here. https://i.postimg.cc/t4NwLb2V/qj4-8-bolts.jpg
What do those strange markings mean to you? "Q J 4.8."
On 11/7/2024 12:48 PM, Clare Snyder wrote:
cheap-assed chinese electro-zinc plated grade 2 would be my guess.
What markings *(if any) on the head?
I never thought of looking at the head of the bolt, which does have soem "secret code" written on it as you can see in the photo of the head here. https://i.postimg.cc/t4NwLb2V/qj4-8-bolts.jpg
What do those strange markings mean to you? "Q J 4.8."
I never thought of looking at the head of the bolt, which does have soem >>>"secret code" written on it as you can see in the photo of the head here. >>>https://i.postimg.cc/t4NwLb2V/qj4-8-bolts.jpg400Mpa nominal tensile slrength with 80% yeild - msfium carbon
What do those strange markings mean to you? "Q J 4.8."
steel. no idea what the QJ stans for
In some other contexts, I've seen it stand for Quanjiangcun, a manufacturing district in China. Not sure if that applies here. Probably not.
On Fri, 08 Nov 2024 10:54:34 -0600, Jim Joyce wrote:
I never thought of looking at the head of the bolt,-a400Mpa nominal tensile slrength with 80% yeild - msfium
which does have soem
"secret code" written on it as you can see in the photo
of the head here.
https://i.postimg.cc/t4NwLb2V/qj4-8-bolts.jpg
What do those strange markings mean to you? "Q J 4.8."
carbon
steel. no idea what the QJ stans for
In some other contexts, I've seen it stand for
Quanjiangcun, a manufacturing
district in China. Not sure if that applies here. Probably
not.
QJ shows up in places but it's never explained what it means
when it does.
BOLT 5131014179 QJ 4.8 https://www.mowermagic.co.uk/acatalog/BOLT---5131014179--- QJ-4.8-5131014179.html
Stainless Steel Hex Head Bolts QJ 2394 https://www.ss-bolt.com/sale-30872879-stainless-steel-hex- head-bolts-qj-2394-1992-stainless-steel-304-m2-m12-hexagon-
head-nuts.html
The word is associated in other links to "Quick Joint" though.
But I can't pin it to these bolts on my own but only to joints.
1 1/2" Guardian Quick Joint QJ Stainless Steel Compression
Fitting
https://www.ebay.com/itm/335193829655
Quick coupling fittings for tank - Quick Joints QJ https://www.bucchi.it/en/prodotti/m04-soluzioni-tecniche- innovative/c08-raccordi-rapidi-ad-innesto-per-serbatoio-
quick-joints-qj
On 11/7/2024 10:15 PM, Clare Snyder wrote:
ALL Quality bolts have roll-formed threads. Cut or in this caseThanks for looking at the threads. Here's a clearer picture of them. https://i.postimg.cc/Vst7x1NL/boltsqj48.jpg
"torn" or "chewed" threads are almost exclusively the domain of cheap
crappy fasteners.
These are definitely NOT rolled threads and appear to have been cut
with a worn out harbor fright dieset - - -
These are for outdoor lights bolted high up where, if they rust, then it
will be very hard to get them unbolted while perched tall on a ladder.
depending on the camera and lighting they look pretty much
similar.
On 11/7/2024 7:22 PM, AMuzi wrote:
depending on the camera and lighting they look pretty much
similar.
Thanks for all the kind help from all you wonderful folks.
You were all right. The seller lied to me about the bolts.
I left the bolts outside in the rain and they rusted already. https://i.postimg.cc/hvVYqqcX/rusted-qj4-8-bolts.jpg
So I guess they're exactly what most of you said they were.
Cheap bolts!
Suitable for a car perhaps. Or maybe only indoors.
I don't know but they rusted already outdoors in the rain.
They're no good for outdoor use for an outdoor pole light
as by the time I need to take it down, they'll be rusted up.
Ever been there before?
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