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Tools & Workshop

17 Types of Wrenches Every Technician Should Know

cyfrowllcยทJun 1, 2026ยท4 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 โ€” fast on bolts you can reach from the side.
  • Box-end โ€” grips all six points of a fastener, far less rounding.
  • Combination โ€” open on one end, box on the other. The all-rounder.
  • Ratchet โ€” keeps the socket on the bolt while you swing back and forth.

Precision wrenches

  • Torque wrench โ€” applies an exact tightening force. Essential for anything safety-critical.
  • Allen / hex key โ€” for socket-head screws.
  • Torx โ€” 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.

Arslan Ijaz โœˆ Verified
// Written by
Arslan Ijaz
Aircraft Maintenance Technician ยท Founder, Chip Vortex

I hold a Bachelor's degree in Aviation Engineering Technology and am currently completing my SARI ANO 66 B1.1 license, having cleared 8 B1.1 modules to date. My hands-on experience comes from internships and practical training at Pakistan International Airlines (PIA), Pakistan Aeronautical Complex (PAC) Kamra, and Sky Wings Flying Academy โ€” where I've worked directly on aircraft systems, troubleshooting, and maintenance procedures, including operations on the Cessna 152. I started Chip Vortex to break down complex aircraft, electronics, and engineering systems the way I wish they'd been explained to me โ€” visually, practically, and without unnecessary jargon.

๐ŸŽ“ B.Sc Aviation Engineering ๐Ÿ“œ SARI ANO B1.1 (8 Modules Cleared) ๐Ÿ›ซ PIA Internship ๐Ÿ› ๏ธ PAC Kamra Internship โœˆ๏ธ Sky Wings Flying Academy