Faithfull
Faithfull Hexagon Key 4.0mm FAIHK40M
Model FAIHK40M
Best price
Where to buy
| Retailer | Price | Availability | Visit |
|---|---|---|---|
| Cheapestchecked 3 hours ago | £0.59 | In stock | Visit Blueperry agriculture (UK) (opens in a new tab) |
 checked 4 hours ago | £0.95 | In stock | Visit Tooled Up (opens in a new tab) |
Prices exclude delivery. We may earn a commission if you buy through these links, which never affects the ranking above — it is always cheapest first.
Price history
Full price historyToday's price is below the 51-day average, and 5% above the lowest we have seen.
About this product
The Faithfull 4mm Hexagon Allen Key is a popular medium size suitable for countless applications across various trades and industries. This is the smallest size to feature chamfered edges, which protect both the key blade and socket fittings from damage during use. The 4mm size is commonly encountered in machinery, automotive work, furniture, and general mechanical assemblies. Constructed from fully hardened chrome vanadium steel, this 4mm key delivers professional-grade strength and durability. The chamfered edges extend tool life whilst protecting valuable components, and clear size markings enable quick identification in workshop environments.
Features and Benefits
- :
- 4mm size perfect for common hexagon socket applications
- Fully hardened chrome vanadium steel for superior strength
- Chamfered edges protect both tool blade and fittings
- Size marked on key for easy identification
- Ideal for automotive, machinery, and general mechanical work
- Professional quality for demanding trade applications Specifications: Key Type: Standard Size (mm): 4
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