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Black oxide 5 mm hex key, 150 mm long, L-shaped

Wiha Tools

Wiha Tools 33443 5 mm Hex Key 150 mm

SKU CH-WZA2-QNJ8R MPN 33443

5 mm metric hex key with 150 mm arms, black oxide finish, corrosion resistant and insulated

  • Product typeHex/Torx Keys
  • Main materialHAWA
  • Color and finishBlack Oxide
  • Precise 5 mm fit for metric fasteners
  • 150 mm arm gives extra reach in tight spots
  • Black oxide finish resists corrosion
  • Insulated construction adds electrical safety
  • Non-magnetic tip avoids metal debris interference

Metric Hex Key 5 mm

The Wiha Tools 33443 is a single-tip hex key with a 5 mm metric size and a 150 mm arm length. It is made from HAWA steel and finished with black oxide for corrosion resistance. The tool is insulated and non-magnetic, suited for general fastening tasks. It arrives new and ready for workshop or field use.

For electrical and general maintenance

Technicians who need an insulated, corrosion-resistant driver for 5 mm fasteners will find this key appropriate. Its non-magnetic tip avoids interference with sensitive components. Users requiring a tether-ready tool, a ball-end profile, or a multi-key set should look at other options. The fixed 150 mm length may not reach deeply recessed bolts.

Insulated 5 mm tip decides fit

The defining specification is the insulated 5 mm hex tip, which determines both fastener compatibility and electrical safety rating. If the application calls for a different tip size, a non-insulated tool, or a tether attachment point, this key will not meet the requirement. Verification of the 5 mm dimension against the fastener is essential before purchase.

How it compares

Measured against everything we stock in Pliers, Wrenches & Gripping Tools, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 87% of the 2,110 comparable items (median $23.99).

Specifications

Product
Brand nameWiha Tools
Model name33443
Product typeHex/Torx Keys
Color and finishBlack Oxide
Size & build
Main materialHAWA

Questions about this item

Does the 150 mm length give enough leverage for tight 5 mm fasteners without hand fatigue?

The 150 mm arm provides solid leverage for 5 mm hex screws, reducing the force needed and limiting hand fatigue during extended use.

Do I need any other tool or accessory to use this 5 mm hex key on standard metric bolts?

No extra tool is required; the single 5 mm tip fits metric hex-head bolts directly.

Will the black oxide finish on this Wiha 33443 resist corrosion when stored with older chrome-plated wrenches?

Yes, the black oxide coating is corrosion resistant and will not react with chrome-plated tools in the same toolbox.

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