Many clients were confused how to correctly achieve the torque test for screwed glands, previously we adopts a special testing equipment to clamp the mandrel, but that is not correct, the torque should be applied to the screwed glands instead of the mandrel.

Here we recommend a simple method to achieve torque test for screwed glands, no special testing equipment needed for this test, operator only needs one vise and one torque wrench, each clamps one end of the screwed glands, shown as following figure.

Applied standard and clauses:

IEC60884-1  "Plugs and socket-outlets for household and similar purposes- Part1:General requirements" clause 24.6
IEC60598-1  "Luminaries-Part1:General requirements and tests" clause 4.12.5
IEC61058-1  "Switches for appliances Part1:General requirements" clause 19.2.5
IEC60669-1  "Switches for household and similar fixed-electrical installations - Part1:General requirements" clause 20.3