Im trying to find replacement connector pins for the harnasses that connect to the computers in my 1996 SL600. EPC gives a description as follows:

Callout KB Part Number Description Footnotes Qty

335 A 008 545 50 26 .CONTACT SPRING NB
0, 5-1, 0 MM

335 A 011 545 81 26 .CONTACT SPRING NB
0, 5-1, 5 MM

335 A 004 545 81 26 .FLAT PIN BUSHING NB
1, 0-2, 5 MM

335 A 008 545 55 26 .CONTACT BUSHING NB
0, 35-0, 75 MM

1) What do the numbers mean below each description.
2) What is the difference between a CONTACT SPRING, a FLAT PIN BUSHING and a CONTACT BUSHING.
3) Does anyone know which size tool I need to remove each of these connectors.

Thank You
John Roncallo