Sizes and Grip Range

Blind rivets are a common fastening method in FRC used to join sheet metal, gussets, and extrusion when access is only available from one side. Two important factors when selecting rivets are size and grip range . 

 

 3/16" Rivets (Common FRC Size) 

 3/16" rivets are larger diameter blind rivets used when a stronger joint is needed. 

 Best uses: 

 

 Structural gusset connections 

 High-load or high-vibration joints 

 Areas where extra strength is more important than weight 

 

 Requirements: 

 

 Correctly sized drilled hole (3/16") 

 Proper grip range selection for material thickness 

 

 Tradeoffs: 

 

 Heavier than smaller rivets 

 Requires more force to install 

 Takes up more material space 

 

 

 Grip Range 

 Grip range is the total thickness of material a rivet can properly clamp. 

 If grip range is incorrect: 

 

 Too short → rivet may not set correctly or could pull out 

 Too long → joint will be loose and weak 

 

 Correct grip range ensures: 

 

 Proper rivet expansion 

 Strong, tight joints 

 Reliable long-term fastening 

 

 

 Best Practice 

 

 Measure total material thickness before selecting rivets 

 Always match grip range to your material stack 

 Deburr holes before installation 

 Ensure rivet is fully seated before releasing the tool 

 

 

 Key Idea 

 In FRC, 3/16" rivets are used for stronger structural joints, but only work correctly when paired with the proper grip range for the material thickness.