Ampco
Ampco M-42M 10 Piece Metric L-Shape Hex Key Set
A 10-piece metric L-shape hex key set made from beryllium copper for corrosion-resistant use on electrical equipment, machinery, automotive and home fasteners
- TypeHex/Torx Keys
- MaterialHAWA
- Non-sparking beryllium copper for safe use near flammable materials
- Ten-piece metric set covers common fastener sizes
- L-shaped handles give better grip in wet or oily conditions
- Corrosion-resistant natural finish extends tool life outdoors
- Lightweight alloy reduces fatigue during extended work
Complete 10-piece metric hex key set
The Ampco M-42M provides ten metric L-shaped hex keys made from beryllium copper for electrical, automotive and home use. The non-magnetic, corrosion-resistant alloy is safe for work on live equipment and in damp environments. Long arms give extra reach and torque for deep or tight fasteners.
Beryllium copper construction and L-shaped profile
The HAWA material eliminates spark risk and reduces weight compared with steel equivalents. L-shaped handles improve grip security in wet or oily conditions and allow higher turning force than T- or U-style keys. Natural finish resists surface oxidation without plating that can chip.
Ten metric sizes cover common maintenance tasks
The assortment handles the most frequent metric hex fittings found on panels, machinery and vehicle components. Users needing imperial sizes, larger metric diameters or ball-end tips for angled access will require a supplementary set. California Proposition 65 warning applies due to beryllium copper content.
Highlights
- Non-sparking beryllium copper for safe use near flammable materials
- Ten-piece metric set covers common fastener sizes
- L-shaped handles give better grip in wet or oily conditions
- Corrosion-resistant natural finish extends tool life outdoors
- Lightweight alloy reduces fatigue during extended work
Specifications
| Brand | AMPCO |
|---|---|
| Type | Hex/Torx Keys |
| Material | HAWA |
Questions about this item
Will the beryllium copper hex keys need replacement if they deform under heavy torque?
The keys are made from beryllium copper for durability and corrosion resistance, so they resist deformation under normal use; no scheduled replacement is required.
What is the first limit reached when using these keys continuously on tight fasteners?
The L-shaped handles provide better grip than T or U shapes, especially in wet conditions, letting you apply torque until the fastener yields rather than the tool slipping.
Do the keys become hot or slippery during all-day use on machinery?
The natural finish on the beryllium copper resists corrosion and maintains grip in wet conditions, so the keys stay comfortable and secure during extended use.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.



