Higher value for your money
Equipped with dimensional accuracy & higher strength levels,
AL RASHED FASTENERS offer you substantial cost saving in the joint
preparation & assembly stages there by raising the value of
your money. The following rules establish this value appreciation.
- Cost of fasteners is disproportionate with their utility. Consequently,
the reliability of 95% cost, of the project rests on 5% cost of
the fasteners giving them high value responsibility in industry.
- Fasteners cost is a minor percentage (5%) of that of the whole
fastening system i.e. In place cost of the system (IPC), itself.
- The IPC cost, for a given joint, can be reduced by using lesser
bolts or smaller diameter bolts. This can only be done through
smaller fasteners with highest tensile strength. Obvious advantage
would be a lighter and smaller assembly.
- In which event costs would be cut under all the heads of IPC
making the assembly economical.
In Place Cost
- Preparation (drilling, tapping etc.)
To reduce the in-place cost, it is, therefore, obvious that in
a given joint, either the number of bolts used should be reduced,
or diameters of the bolts used should be reduced. This is possible
by selecting smaller size fasteners with higher tensile strengths.
The added advantage will be a lighter and smaller assembly.
Equipped with dimensional accuracy and higher strength levels, AL
RASHED FASTENERS offer you substantial cost saving in the fastening
assembly. Value of your money is raised after heeding to the following
Advantage of High Tensile Fasteners
Maximum of strength with minimum of fasteners
High tensile Hex Nuts are forged to precision grade dimensions
to ensure smooth assembly. In addition, heat treatment is done to
suit the chemistry of every part of steel. This imparts optimum
mechanical properties to ensure that correct tightening torque can
be applied to fulfill design requirements.
- Reduced number of bolts
- Reduced bolt size
- Less numbers of holes
- Reduced size of holes
- Reduced assembly cost
- Reduced maintenance cost
Comparing strength of high tensile and ordinary mild steel bolts
(4.6 = 100)
| 400 MPa
| 240 MPa
It is obvious from this above chart that
high tensile bolt of property class 10.9 is approximately four times
stronger that an ordinary mild steel bolt of property class 4.6.
This extra strength of high tensile bolt can be used to upgrade
an assembled joint from a low tensile one to a high tensile one
to gain all the advantages described.
High tensile Hex bolts and nuts by AL RASHED are used in a wide
range of applications including automotive, structures, machine
building and electrical industries. Their special design and properties
offer several benefits.
Threads are rolled, not cut or ground. Rolled threads are more
uniform and have closer tolerances. Contour following flow eliminate
planes of weakness and improve fatigue strength.
They are held to precision grade to give maximum cross-section
area to ensure smooth assembly.
Heat treated in a controlled atmosphere to achieve maximum strength
In contrast to conventional mechanical bolts, which cut metal
fibers, break fiber flow lines and create planes of weakness at
stress points, controlled forging give uniform grain flow with unbroken
fiber lines, make heads stronger; besides preventing fatigue failure
in the vital area.
Special Under-Head Fillet Design
Provides smooth transition in the area from head to shank, reduces
stress concentrations; improves fatigue life.