hand screw

noun
  1. a screw that can be tightened by the fingers, without the aid of a tool.
  2. Also called hand-screw clamp. Carpentry. a clamp having two wooden jaws that are adjusted by two long screws.

Origin of hand screw

First recorded in 1755–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018