100 Pack Black Large Flange Blind Rivets 3 16 X 5 8 Inch Grip Heavy Duty Aluminum Construction Zero Sweat Clamping Rock Solid Joints No Nonsense Fastener Kit For Auto Repair And Heavy Fabrication

Heavy Duty Black Flange Blind Rivets 3 16 Inch 100 Pack
✔️ Aluminum grip steel mandrel 3/16 dia 5/8 grip range black finish

This pack delivers heavy duty flange fasteners designed for securing sheet metal, automotive panels, and metal framing assemblies. Shop fabricators use them to distribute clamping stress across wider surface areas while preventing pull through softer substrates. The black oxide coating resists rust for garage work and outdoor metal builds.

✅ 3/16 inch nominal shank diameter for standard hole sizing
✅ Fits materials ranging from 0.563 to 5/8 inch thick
✅ Includes one hundred black zinc coated aluminum rivets per box
✅ Thick steel mandrel snaps cleanly for consistent flush seating

💡 How do you pick the right drill size and grip length for flange rivets?

- Start by measuring your total stackup thickness and add a little clearance for the grip zone.
- Choose a pilot bit close to the body diameter so the aluminum dome spreads evenly under pressure.
- Using a handy manual rivet gun keeps tension steady and avoids crushing thin sheets during installation.
- Match the mandrel strength to your base metal to ensure reliable pops every time.