- Drill hole to correct
diameter, countersink if
- Screw the Ensat onto the
driving tool with the cutting
slot or cutting hole pointing
- Ensure that driving stud
engagement into the Ensat does
not exceed half the height of
the cutting slot or hole
- Ensure that the insertion
tool and Ensat are perpendicular
to the hole.
- When using a production
driver, the rotating shell must
rest against the externally
visible stop pins in such a way
that it is driven round
clockwise by the pins.
- Set depth control, where
applicable, to 0.1/0.2mm below
the surface of the receiving
- Apply reasonable downward
pressure whilst driving the
Ensat into the material to
0.1/0.2mm below the surface.
- Finally back the driving
tool out of the Ensat. In the
case of a production driver the
friction lock will be released
automatically, the hand tool
will require the hexagon nut to
be held as the drive is
Avoid "bottoming" the insert or
using excessive torque as this may
strip the insert out or reduce
Most insertion problems arise
from incorrect hole size, poor tool
maintenance or bad insertion
techniques. Adequate trials should
always be carried out before moving
Samples and low volume
A hand tool is available for use
with a tap wrench.
For field repair or initial
tests, a nut and bolt can be used.
Ensure best possible alignment of
the insert in relation to the hole.
Hole size calculation
Whilst 30% thread engagement will
normally give almost maximum
performance, the most appropriate
hole size will vary according to the
type of receiving material and the
type of insert to be used.
Example: Hole size for light
alloy with tensile strength of 280
N/mm2 for M8 insert type 302 is 10.8
- 11.0mm, for M8 insert type 307 is
11.1 - 11.2mm.
If difficulty is experienced in
installation, it is possible to take
the next hole size up without a
detrimental effect. However, this
should always be established by
tests prior to production.
work-piece made of a light
alloy, this diagram
illustrates clearly that
whilst correct hole sizes
are important for product
reliability, the Ensat 302
achieves almost maximum
pull-out with only 30%