41 00 ... Repair solution for straight shank/hexagon rivet nut

Protection measures! 

• Wear protective goggles
• Wear protective gloves

1. Carefully spot-drill rivet head with a larger drill bit/countersink
   Fig 1: Drilling Rivet Head With Larger Drill Bit/Countersink

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   IMPORTANT: Avoid paintwork damage
2. Knock rivet head away with a chisel
   Fig 2: Removing Rivet Head With Chisel

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3. Drive through rivet shank into cavity, remove if necessary
   Fig 3: Identifying Rivet Shank Into Cavity

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4. Clean component, eliminate paintwork damage if necessary
   Fig 4: Identifying Hole

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   If the rivet shank can be removed: 

   IMPORTANT: To avoid corrosion, stop chips/swarf by means of cavity sealing.
   Follow instructions on corrosion protection.  See 41 00 ... CORROSION PROTECTION .
5. Preserving cavity
   Fig 5: Preserving Cavity

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   If the rivet shank cannot be removed: 

   WARNING: Risk of injury!
   Observe notes on cavity foam.  See 41 00 ... WORKING WITH 2-COMPONENT PU CAVITY FOAM .
   IMPORTANT: To avoid corrosion and rattling noises, stop chips/swarf and rivet nut shank with cavity foam.
   Remove foam remnants with isohexane (cleaning-grade petroleum spirit).
   Fig 6: Removing Foam Remnants With Isohexane

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1. 5. Stop rivet shank by means of specific foaming
   NOTE: Fit rivet nut as quickly as possibly, ideally before the cavity foam hardens.

   Hexagon rivet nut (up to M8 thread), straight shank rivet nut: 

   IMPORTANT: Follow manufacturer's operating instructions.
   Make sure rivet nut correctly contacts component.
   Fig 7: Fitting Rivet Nut

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2. 6. Set rivet nut with hand rivet gun
   NOTE: According to the manufacturer, the pictured tool is suitable up to an M8 thread.

   Hexagon rivet nut (from M10 thread): 

   IMPORTANT: Ensure correct screw length. The complete thread length of the rivet nut must be used for installation.
   Make sure hexagon rivet nut correctly contacts component.
   Replace screw after use.
3. 6. Insert screw (tensile strength min. 10.9) with body washer into hexagon rivet nut
4. 7. Insert hexagon rivet nut into pre-punched hexagon hole and install by turning screw

   Notes on installation: 

   Rivet nut is upset (screw very difficult to move).

   Rivet nut is contracted (screw comparatively easy to move).

   Rivet nut is pressed onto the component (screw slowly becomes difficult to move). Procedure is finished with the fitting of the relevant component and its tightening torque.

   Fig 8: Identifying Rivet Nut

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