Classic Clamping LOCK Hook for 4mm Square Rods (40kg)

Classic Clamping LOCK Hook for 4mm Square Rods (40kg)

The Classic Clamping LOCK Hook for 4mm Square Rods is a heavy-duty, self-locking picture hook designed exclusively for 4mm square steel and aluminium picture hanging rods. Featuring an integrated spring-loaded clamp mechanism, this gallery rod hook slides smoothly along 4mm rods and locks automatically into place. Capable of supporting heavy exhibition artwork up to 40kg per hook, it provides maximum security for high-traffic public displays, museums, and commercial art galleries.

What’s Included

Classic Clamping LOCK Hook for 4mm Square Rods 40kg (Pack of 1)
> rods, tracks NOT included

Key Specifications

• Maximum Weight Capacity: Up to 40 kg (88 lbs) per hook — use 2 hooks for up to 80 kg
• Rod Compatibility: Fits standard 4mm x 4mm square hanging rods
• Locking Mechanism: Self-clamping auto-lock (clamping force increases with artwork weight)
• Material & Construction: High-grade metallic alloy with a durable silver finish
• Security Feature: Built-in anti-theft locking tab to prevent accidental dislodgement
• Primary Application: Art galleries, museums, public exhibitions, contract framing, and heavy mirror displays

Heavy-Duty 40kg Load Performance

Designed specifically for commercial display environments, a single clamping LOCK hook safely holds heavy frames, glass-fronted displays, and solid wood art pieces up to 40kg. Pairing two hooks on separate 4mm rods doubles your display capacity to 80kg total load.

Instant, Tool-Free Self-Clamping Lock

Adjusting frame heights takes seconds without screwdrivers or manual thumb-screws. Simply slide the hook up or down your 4mm square rod to the required position—the internal auto-clamping mechanism engages immediately, increasing its grip as weight is applied.

Enhanced Exhibition Security

Featuring an integrated locking feature, this hook prevents artwork from being easily bumped or lifted off the rod in busy public spaces, making it the ideal choice for art fairs, school halls, museum displays, and retail environments.