b) if the projection of the part which is gripped is less than 10 mm in the direction of
removal 30 N.
The push force is applied by means of a rigid test finger similar in dimensions to the standard test finger
shown in Figure 1.
The pull force is applied by a suitable means such as a suction cup, so that the test results are not
affected.
While the pull test of a) or b) is being applied, the test fingernail shown in Figure 7 is inserted in any
aperture or joint with a force of 10 N. The fingernail is then slid sideways with a force of 10 N; it is not
twisted or used as a lever.
If the shape of the part is such that an axial pull is unlikely, no pull force is applied, but the test fingernail
shown in Figure 7 is inserted in any aperture or joint with a force of 10 N, and is then pulled for 10 s by
means of the loop with a force of 30 N in the direction of removal.
If the cover or part is likely to be subjected to a twisting force, a torque as detailed below is applied at the
same time as the pull or push force:
– for major dimensions up to and including 50 mm 2 Nm;
– for major dimensions over 50 mm 4 Nm.
This torque is also applied when the test fingernail is pulled by means of the loop.
If the projection of the part which is gripped is less than 10 mm, the above torque is reduced to 50 % of
the value.
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