Definition

Noun: A sash fastener is a type of lock specifically designed for double-hung windows. It is attached to the meeting rails of the upper and lower window sashes to secure them together in a closed position, preventing the window from being opened.

Usage

A sash fastener is used to lock a double-hung window shut. It is a common hardware component on windows for security and to prevent drafts.

Examples

• The old window was loose, so I installed a new sash fastener to keep it securely closed.
• To lock the window, you simply turn the handle on the sash fastener.

Advanced Usage

• Material and Design: Sash fasteners can be made from various materials like brass, zinc, or stainless steel and come in different finishes (e.g., polished, antique) to match window decor.
• Child Safety: Some modern sash fasteners incorporate key-operated locks or child-proof features to prevent young children from opening windows unsupervised.

Variants and Related Words

• Sash lock: A direct synonym for sash fastener.
• Window lock: A more general term that can include sash fasteners but also refers to other types of locks for casement, sliding, or awning windows.

Synonyms

• Window catch
• Sash lock

Antonyms

• Sash opener (not a standard term, but conceptually opposite in function)

Noun

1. a lock attached to the sashes of a double hung window that can fix both in the shut position