Tool Box Storage Lid Gas Struts Pair – 400mm 400N – 10mm Ball Socket Ends – 4x Heavy Duty L Brackets
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Force: 400N per strut (800N total pair support)
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Extended Length: 400mm
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Stroke: 150mm
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End Type: 10mm Ball Socket (M6 Thread)
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Ball Size: 10mm (snap-on)
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Quantity: Supplied as a matched pair (2 gas struts)
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Brackets: 4x Heavy-duty L brackets included
Suitable For
Designed for heavy-duty tool boxes and storage box lids, site boxes, van tool chests and workshop storage trunks requiring strong, stable lift assistance.
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Recommended Lid Depth (hinge to front edge): 500–800mm
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Suitable Lid Weight (lid only): 40–72kg (using two struts)
Recommended Lid Weight & Installation Guidance
These 400mm 400N gas struts are suitable for lids approximately 40–72kg when installed correctly. Actual lifting performance depends on hinge position, lid material and mounting geometry.
Recommended Mounting Position
- Install one strut on each side of the lid
- Mount approximately 20–30% down from the hinge on the lid panel
- Position the lower L bracket around 150–320mm below the top inside edge of the box frame (adjust to suit internal depth and clearance)
- Ensure the strut is slightly compressed when fully closed to maintain correct preload tension
⚠ Force guidance: If the lid is heavier than 72kg, a higher force rating may be required. If the lid is lighter than 40kg, the struts may feel too strong.
🔧 Mounting Bracket Type – 4x L Bracket Kit
This kit includes 4x heavy-duty 90° L brackets and is recommended for:
- Tool boxes with reinforced internal frames
- Deep site boxes and van tool chests
- Metal or heavy timber box frames
- Hardwood, steel or composite lids
- Installations requiring additional mounting offset
⚠️ Note: For standard flat-panel lids or minimal internal clearance, a mixed mounting kit (2x L + 2x Flat brackets) may be more suitable.
Secure 10mm Ball Socket System
This 400mm 400N gas strut pair features a 10mm ball socket end designed to snap securely onto the included brackets. The articulation ensures smooth movement while reducing stress on mounting points.
Smooth and Controlled Heavy-Duty Lid Support
With 400N force per strut (800N combined), these toolbox storage lid gas struts provide powerful lifting assistance and controlled closing for heavy lids where stable support is essential.
- Helps prevent sudden lid drops
- Improves user safety
- Reduces hinge strain
- Extends tool box and storage box lifespan
Key Features
- 10mm ball socket snap-on connection
- 4x heavy-duty steel L brackets included
- Durable finish for workshop environments
- Matched pair for balanced lifting
- Designed for heavy tool boxes and storage chests
For optimal performance, confirm lid weight and mounting geometry before installation.
🛡️ AUTORCE Customer Assurance
- ✓ Quality-tested components
- ✓ 30-Day Returns (unused items)
- ✓ Fast UK Dispatch
- ✓ Secure checkout & UK-based support
Order today and upgrade your toolbox lid with a reliable 400mm 400N heavy-duty lift support.
