Spotlight: Huck Stainless Steel Auto-Bulb Structural Blind Fastener

Spotlight: Huck® Stainless Steel Auto-Bulb® Structural Blind Fastener

An easy-to-Install Bulbing Fastening System for Superior Blind Side Strength.

The Auto-Bulb works by clamping the joint with a broad, blind side bulb, this makes it a good choice for use within thin materials, and within oversized, misaligned, or slotted holes. Unlike other bulbing blind fasteners, Auto-Bulb’s unique bulbing system creates superior blind side bearing strength. Auto-Bulb is available in 400 stainless steel for corrosion resistance and steel.

The benefits of using a Huck Auto-Bulb fastener:-

• Unique bulbing system for superior blind side strength.
• Positive mechanical pin retention ensures structural integrity.
• Easy-to-use lead in point for fast installation.
• Ideal for high pull-out strength in thin materials.
• Good for automated, high-speed assemblies.
• Aesthetic blind side appearance.
• High corrosion resistance: stainless steel (400) enables use in applications operating in corrosive or hygienic environments including white goods and agriculture.

Available Sizes: 1/4" in stainless steel (3/16" and 1/4" in steel).

Materials: Stainless steel (also available in steel).

Head styles: Protruding, in stainless steel (protruding and countersunk in steel).

Huck structural blind fasteners are Howmet’s answer to loosening and vibration challenges. Engineered with a unique locking design, an internal lock is created during installation that virtually eliminates pin push-out by mechanically locking the pin to the sleeve. Simple, visual inspections ensure joint integrity. In applications where vibration resistance, reliability, and strong hold are critical, no fastening system is more dependable than Huck.

Technical support that will add value to your project.

Star Fasteners have been a Huck fastener distributor for over thirty years and are the UK’s largest stockists.

We work closely with our customers to understand their applications and suggest new products that they may not have initially considered for a project.

For more information call us on +44(0)115 932 4939 or email



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