sash fastener
sash lock
window lock

Taking a deep breath, Spook quietly worked open the window lock and slipped inside.

She fumbled with the window lock, pushed it open, and stared down.

Do you have either or both double-glazed windows and window locks?

A few window locks and perhaps a burglar alarm were all that was required.

The least expensive yet most effective security products on the market are key operated window locks.

"It was only $5 to fix it," he said of the window lock.

At best, it was designed so that any single blocking operation could make no more than one window lock up at a time.

I picture him sitting in a room with good track lighting and window locks, looking at his acquisitions.

Even the door hinges and window locks are highly decorated brass.

We have window locks and bright lights in parking lots.