Allen Keys

An Allen key is a hand wrench with a hexagonal cross-section, usually bent into an L shape, used to tighten and loosen bolts and set screws that have a hexagonal socket in the head. It is used in machine and mold assembly, fixture connections, bicycle and furniture assembly, and for hex socket bolts on device housings. The products in this category are İzeltaş brand sets: long-arm hex, ball-end, T-handle, cassette type, SAE inch and Torx sets are offered with contents such as 8, 10 and 12 pieces. Choose by the socket type of the bolt (hex or Torx), measurement system (metric or SAE inch), the size range in the set, and the length and head shape needed for access. A ball-end key allows entry into the bolt at an angle, while a T-handle makes gripping easier in repetitive work. A Torx key and a hex Allen key are not interchangeable; metric and inch sizes are also not used in place of each other.

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How to choose Allen Keys

An Allen key is a hand wrench with a hexagonal cross-section, usually bent into an L shape, used to tighten and loosen bolts and set screws that have a hexagonal socket in the head. It is used in machine and mold assembly, fixture connections, bicycle and furniture assembly, and for hex socket bolts on device housings.

  • Identify the measurement or fastening task and the required insulation safety rating.
  • Select jaw profile, cross-section range and accessories for the conductor or fastener standard.
  • Check CAT voltage category and replacement tip or die availability for field conditions.

Frequently asked questions

What is Allen Keys and where is it used?

An Allen key is a hand wrench with a hexagonal cross-section, usually bent into an L shape, used to tighten and loosen bolts and set screws that have a hexagonal socket in the head. It is used in machine and mold assembly, fixture connections, bicycle and furniture assembly, and for hex socket bolts on device housings.

What should I compare when choosing Allen Keys?

Choose by the socket type of the bolt (hex or Torx), measurement system (metric or SAE inch), the size range in the set, and the length and head shape needed for access.

Where can I find technical details for Allen Keys products?

A Torx key and a hex Allen key are not interchangeable; metric and inch sizes are also not used in place of each other.

Hand Tools Selection Guide