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Adjustable wrench

v1Tool guide · Generated 24 June 2026

How to use Adjustable wrench

Usage notes

An adjustable wrench, also known as a shifting spanner, is designed to grip nuts and bolts of various sizes
To use it, select the appropriate jaw opening by turning the knurled adjustment screw until the jaws fit snugly around the fastener
Apply force to the handle in a smooth, steady motion, ensuring the wrench is seated fully on the fastener to prevent slipping
This tool is ideal for general assembly, disassembly, and maintenance tasks where specific wrench sizes are not readily available

Always wear safety glasses to protect your eyes from flying debris
Ensure the wrench jaws are clean and free of grease for a secure grip
Never use a pipe or extension on the wrench handle to increase leverage, as this can cause the tool to break or slip, leading to injury
Inspect the wrench for damage before each use; discard any wrench with worn or damaged jaws
Adhere to general safe working practices as outlined by NZ WorkSafe guidelines

Keep the adjustment mechanism clean and lubricated to ensure smooth operation
Wipe down the wrench after use to remove dirt and grime
Store the wrench in a dry place to prevent rust, ideally in a toolbox or on a tool pegboard
Periodically check the jaws for any signs of wear or damage and replace if compromised

The adjustable wrench, often called a spanner in NZ and the UK, evolved from fixed-size wrenches to offer versatility
Common types include the standard adjustable wrench and the wider-opening "Crescent" style
Brands like Stanley and Bahco are well-regarded for their durability and precision