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.