Lockbolts, Structural Blind Fasterners and Tooling

Auto-Bulb ® An Easy-to-Install Bulbing Fastening System for Superior Blind Side Strength For use in a variety of applications including thin materials or delicate composites, Huck Auto-Bulb ® is the perfect solution. Easy- to-install, it works by clamping the joint with a large diameter head and broad, blind-side bulb, which spreads to diffuse the load over a large area, ensuring permanent clamp. Available in steel and 400 stainless steel for enhanced corrosion resistance. This high-reliability fastener offers an easy-to-use lead-in point in the form of a tapered, hole-seeking tip, which means fast, reliable installation. Because of its high pull-out strength, Auto-Bulb is an ideal choice for use in thin materials, and in oversized, misaligned, or slotted holes. Unlike other bulbing blind fasteners, Auto-Bulb’s uniquely engineered bulbing system creates superior blind-side bearing strength with the bulb always forming on the sheet line. Its positive mechanical pin retention ensures structural integrity. Available Sizes 3/16”, 1/4”, 3/8” Materials Steel and 400 Series Stainless Steel Headstyles Protruding, oval countersunk ✓ Unmatched installation speed ✓ Superior blind side strength ✓ Minimal blind side protrusion prior to installation ✓ Vibration resistance ✓ Steel and corrosion resistance 400 stainless steel ✓ High pull-out strength in thin materials ✓ Aesthetic blind side appearance 41 Howmet Fastening Systems