Torsion bar grease nipples

[Thomas591]

On the housing of floating bearings that support the front end of the torsion bar are little grease nipples. Guess how I know: when removing the torsion bars from my 411 S5 I tore the grease nipples off.
I managed to remove the remains of the grease nipples out of the bearing housing, but now I need two new grease nipples. Can anybody tell me which thread these nipples have?

Thanks

Thomas