Faithfull
Faithfull Hexagon Key 12.0mm FAIHK120M
Model FAIHK120M
Best price
Where to buy
| Retailer | Price | Availability | Visit |
|---|---|---|---|
| Cheapestchecked an hour ago | £3.91 | In stock | Visit Blueperry agriculture (UK) (opens in a new tab) |
 checked an hour ago | £4.49£5.94 | In stock | Visit Tooled Up (opens in a new tab) |
 retailer's price from 16 Jul 2026 | £4.99 | In stock | Visit Blueperry Tool & Builders Merchants (UK) (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 53-day average, and 4% above the lowest we have seen.
About this product
The Faithfull 12mm Hexagon Allen Key is engineered for heavy-duty applications requiring substantial torque on large hexagon socket fasteners. This robust size is commonly used in industrial machinery, heavy equipment maintenance, and structural engineering where larger fasteners demand professional-grade tools. Constructed from fully hardened chrome vanadium steel, this 12mm key delivers the exceptional strength necessary for high-torque applications without risk of bending or breaking. Chamfered edges protect both the key and socket fittings from damage during use, whilst clear size markings enable rapid identification.
Features and Benefits
- :
- 12mm size ideal for heavy-duty hexagon socket fasteners
- Fully hardened chrome vanadium steel for superior strength and durability
- Chamfered edges prevent damage to tool blade and fittings
- Size marked on key for quick identification
- Perfect for industrial machinery and heavy equipment
- Professional quality built for demanding trade applications Specifications: Key Type: Standard Size (mm): 12
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