What type of stainless steel are your
studs made from?
Our studs are made from 347 stainless
steel. This type of stainless steel is used extensively
in both marine and aerospace applications for it's stability
at high temperatures, strength, and corrosion reistance.
I have seen other companies sell stud
sets for over three times as much as you charge, are what
is different about your studs?
The main difference between our studs
and the other studs on the market is the composition. "Stainless
300" is what many of the other studs on the market
are classified as(by their manufacturer). They do not say
what specific grade of it is and we must assume that it
is a proprietary alloy. What we can infer from "Stainless
300" is that it is a 300 series stainless steel (non-hardenable)
and thus offers good strength and corrosion resistance like
all other 300 series stainless steels. See above for the
grade of steel we use.
The other feature that seperates
their studs from our is the "hex broach" in the
end of the stud. This is a nice feature but it adds another
secondary process to the manufacturing of the stud, which
in turn increases the price. We chose to not broach our
studs to save our customers money, and in our opinion it
isn't worth it. Refer to the Tech FAQ for installation instructions
for our studs, you will find them to be very easy to install.
What is the difference between stainless
nuts and copper plated lock nuts and is one better than the
The big difference between the two
types of nuts is that the stainless nut is a NON locking
nut, the copper plated nuts are a LOCKING nut. The stainless
nuts utilize a lock washer (included in the sets) to keep
the nut from turning off the stud. The copper plated nuts
have a 'crimped' end that will create friction between the
male threads of the stud and the female threads of the nut,
the friction keeps the nut from turning off the stud.
You will be OK using either style
nut for this application. We offer both because many people
prefer one style of fastening method over the other. Some
people like the look of all stainless, some like the look
How are the threads on your studs manufactured?
The threads on our M8 studs are manufactured
using a manufacturing process called "rolling"
(our new M10 studs are cut, not rolled). A rolling die,
which is a hardened tool with the thread profile, is pressed
onto the raw rod stock. The force is gradualy increased
as the threads are being formed, during this process the
steel is cold worked. Cold working will produce stronger/more
durable threads, as well as increasing the studs yield strength.
Some other stud manufacturers cut
their threads. Threads that are cut using a CNC lathe are
not as durable as rolled threads of the same material.
Why are the metal ends of your DSM
studs a few millimeters shorter than the OEM studs?
The metal ends (end of the stud that
threads into the cylinder head) of the factory studs are
longer than they need to be. There are no adverse affects
to the shorter ends on our studs (they are shorter for manufacturing
ease). Longer metal ends will not make the fasteners any