Definition

Noun: A type of fastener, specifically a nut, that has two flat, wing-like projections. These projections allow the nut to be tightened or loosened by hand using the thumb and forefinger for leverage, without the need for a tool like a wrench.

Usage

This term refers specifically to the fastener itself. It is a compound noun where "wing" describes the shape of the projections and "screw" is used here in the sense of a threaded fastener (though technically it is a nut, not a screw). * You secure the panel with a wing screw. * The wing screw was loose, so I tightened it by hand. * The design uses wing screws for tool-free assembly.

Advanced Usage

• Technical Context: In mechanical and assembly contexts, a wing screw is chosen for applications requiring frequent adjustment or disassembly where tools are inconvenient. It is a type of "thumb screw."
• Specification: When ordering parts, one might specify the thread size, material, and finish of the wing screw (e.g., "a stainless steel M6 wing screw").

Variants and Related Words

• Thumb Screw (Noun): A very close synonym. While all wing screws are thumb screws, some thumb screws may have a different head design (like a knurled head) instead of wings. The terms are often used interchangeably.
• Wing Nut (Noun): A related but distinct fastener. A wing nut is also hand-tightened but is designed to mate with a bolt or threaded rod. A wing screw typically has its own integrated male or female threads and is often used as a standalone fastener or clamp.
• Butterfly Nut (Noun): Another synonym for wing nut, emphasizing the wing-like shape.

Synonyms

• Thumb screw
• Hand screw
• Winged nut (less common)

Related Phrases

• Finger-tighten: To tighten using just the fingers, as one would with a wing screw.
  • Finger-tighten the wing screw, then give it a final quarter-turn with pliers for security.

Noun

1. a threaded nut with winglike projections for thumb and forefinger leverage in turning