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Tools & Workshop

17 Types of Wrenches Every Technician Should Know

ARSLAN IJAZ·Jun 1, 2026·Updated Sep 2, 2026·4 min read

The right wrench turns a 30-minute job into a 5-minute one. Here is the core set worth knowing.

Everyday wrenches

  • Open-end — fast on bolts you can reach from the side.
  • Box-end — grips all six points of a fastener, far less rounding.
  • Combination — open on one end, box on the other. The all-rounder.
  • Ratchet — keeps the socket on the bolt while you swing back and forth.

Precision wrenches

  • Torque wrench — applies an exact tightening force. Essential for anything safety-critical.
  • Allen / hex key — for socket-head screws.
  • Torx — star-shaped, common in modern equipment.

Specialty wrenches

  • Pipe wrench, strap wrench, crowfoot, flare-nut, and the humble adjustable wrench for when nothing else fits.

A torque wrench that lives at the bottom of a toolbox, un-calibrated, is just an expensive lever. Look after it.

Learn the feel of each one and you stop fighting fasteners and start removing them.

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// Written by
Arslan Ijaz
Trainee Aircraft Maintenance Engineer (B1.1) · Founder, Chip Vortex

Every explanation on Chip Vortex is written or reviewed by me — a trainee aircraft maintenance engineer with a BS in Aviation Engineering Technology, B1.1 licence in progress, and hands-on experience at PIA, PAC Kamra and Sky Wings Flying Academy.

// Keep Reading

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