Specifications

AC 43.13-1B 9/8/98
Page 11-78 Par 11-190
T
ABLE 11-16. Bolt and nut bonding or grounding to flat surface.
Aluminum Terminal and Jumper
Structure
Screw or bolt
and nut plate Lock-nut Washer A Washer B Washer C
Aluminum Alloys
Magnesium Alloys
Steel, Cadmium
Plated
Steel, Corrosion Re-
sisting
Cadmium Plated
Steel
Cadmium Plated
Steel
Cadmium Plated
Steel
Corrosion Resisting
Steel or Cadmium
Plated Steel
Cadmium Plated
Steel
Cadmium Plated
Steel
Cadmium Plated
Steel
Cadmium Plated
Steel
Cadmium Plated
Steel or Aluminum
Magnesium Alloy
Cadmium Plated
Steel
Corrosion
Resisting Steel
None
None or
Magnesium alloy
Cadmium
Plated Steel
Cadmium
Plated Steel
Cadmium Plated
Steel or
Aluminum
Cadmium Plated
Steel or
Aluminum
Cadmium Plated
Steel or
Aluminum
Cadmium Plated
Steel or
Aluminum
Tinned Copper Terminal and Jumper
Aluminum Alloy
Magnesium Alloy
1
Steel, Cadmium
Plated
Steel, Corrosion Re-
sisting
Cadmium Plated
Steel
Cadmium Plated
Steel
Corrosion Resisting
Steel or Cadmium
Plated Steel
Cadmium Plated
Steel
Cadmium Plated
Steel
Cadmium Plated
Steel
Cadmium Plated
Steel
Cadmium Plated
Steel
Corrosion Resisting
Steel
Aluminum
2
Alloy
None
None
Cadmium
Plated Steel
Cadmium
Plated Steel
Cadmium
Plated Steel
1
Avoid connecting copper to magnesium.
2.
Use washers having a conductive finished treated to prevent corrosion, suggest AN960JD10L