hook wrench
Definition
Noun: A hook wrench is a specialized hand tool used for turning nuts or bolts. It is characterized by having a hook-shaped end that fits over and engages with the nut or bolt head to apply torque.
Usage
A hook wrench is specifically designed for situations where a standard wrench or socket cannot be used, often because the fastener is recessed or has a unique shape that the hook can securely grip.
Examples
- The mechanic used a hook wrench to tighten the large, recessed collar on the shaft.
- For this type of plumbing fitting, you will need a hook wrench to get enough leverage.
- The hook wrench engaged perfectly with the slots on the round nut.
Advanced Usage
- Hook wrenches are often used in pairs (one on each side of a large nut) for balanced application of force.
- They are common tools in automotive, plumbing, and machinery maintenance for working on specific types of collars, locknuts, and pipe fittings.
Variants and Related Words
- Pin Spanner Wrench: A similar tool that uses pins instead of a hook to engage holes in a fastener.
- C-Spanner Wrench: Another name for a hook wrench, commonly used in British English, referring to its C-shaped profile.
Synonyms
- Spanner wrench (in a general sense for tools that engage with holes or slots)
- C-spanner
Antonyms
- Open-end wrench: A wrench with fixed, parallel jaws.
- Box-end wrench: A wrench with a closed loop that fits over the fastener.
Noun
-
a wrench with a hook that fits over a nut or bolt head
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