Thumb nut

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Related to thumb nuts: Thumb screws
a nut for a screw, having wings to grasp between the thumb and fingers in turning it; also, a nut with a knurled rim for the same perpose.

See also: Thumb

References in periodicals archive ?
roofing paper * Hardware * 6 heavy strap hinges * 1 pound 10d nails * 2-1/2 pounds 6d nails * Four 2-1/2" bolts with thumb nuts