I was on Ebay checking the price of Beru Glow Plugs and found that one of the Sellers gave some information on the plugs (however these Gps were not for Mercedes they are Gps for a Ford Escort).

He listed something called a “Failure Moment [Nm] 45.

Could it be that BERU can supply a spec telling at what torque their Glow Plugs will break off at for those long breakage prone Glow Plugs like go on the 606 Engines?
And, could that spec be used to try to avoid breaking them when you take them out?

Tightening Torque [Nm] 22
Failure Moment [Nm] 45
Port Type M4/2Nm
Cone Pitch 63°
Fitting Depth [mm] 21
Overall Length [mm] 67
Thread Size M 12x1,25
Spanner Size 12 mm
Glow Plug Type Pencil-type Glow Plug
Glow Plug Type After-glow capable
Rated Current [A] 14
Voltage [V] 11

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