hook wrench

Thân thiện

A mechanic uses a hook wrench to tighten a large bolt.

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.

Học thuật

Noun

1. a wrench with a hook that fits over a nut or bolt head

Từ đồng nghĩa

• hook spanner