Find the Right Replacement Size When You've Lost Your IKEA Allen Key
Quick Answer: What size is a standard IKEA Allen key? Most IKEA furniture uses a 4mm or 5mm hex key. For larger items like bed frames or dining tables, you may occasionally need a 6mm key. While IKEA provides a basic tool in the box, a high-quality Chrome Vanadium (Cr-V) set is far more comfortable to use and prevents the bolt heads from stripping.
Why the "Free" IKEA Wrench Isn't Enough
We’ve all been there: you’re halfway through building a Malm bed or a Kallax shelf and the small, L-shaped bit of wire IKEA provided starts hurting your hand or, worse, it slips and rounds out the bolt. These free tools are often made of soft, low-grade steel.
The Essential Replacement Sizes
If you’ve lost your original tool, don't worry. IKEA fasteners are metric. Having a standard metric set will cover you for 99% of their range:
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4mm: Used for smaller chairs, drawer handles, and light shelving.
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5mm: The "standard" for most wardrobes, desks, and table legs.
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6mm: Used for heavy-duty structural bolts on beds and sofas.
Why Upgrade to a Professional Set?
Using a HemBorta hex key set instead of the "disposable" IKEA version gives you better leverage and a more precise fit. Our keys are heat-treated to ensure they don't bend or "cam out," meaning your furniture stays tight and sturdy for years to come.
