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bolt1 a strong metal fastening rod with a shaped head at one end and a blunt threaded screw at the other, used with a matching threaded nut. [1/14 definitions]
clamp an apparatus consisting of two movable opposing surfaces, often connected by a large screw or screws and used to hold two or more objects together. [1/3 definitions]
clincher a nail or screw used for clinching. [1/3 definitions]
countersink to enlarge the top portion of (a hole) so that the inserted head of a bolt, screw, or the like does not protrude above the surface. [2/4 definitions]
jackscrew a jack in which the lifting surface is threaded on and operated by a vertical screw.
lag bolt see lag screw.
lag screw a heavy wood screw with a hexagonal or square bolt head that is turned by a wrench.
micrometer caliper a precision caliper with a spindle that is moved by a micrometer screw, used for measuring minute distances with extreme accuracy.
micrometer screw a very finely threaded screw that is used in micrometers to give extremely fine measurements, esp. of thickness.
monkey wrench a wrench with one movable jaw that can be adjusted with a screw to fit nuts of various sizes.
right-handed made to turn or spiral clockwise, from left to right, as a screw. [1/5 definitions]
screw a device consisting of rotary blades oriented so that they pull or drive something by transferring helical force as they rotate; screw propeller. [4/17 definitions]
screwdriver a tool for turning a screw, consisting of a shank that fits the head of the screw and a handle or mechanism for turning the shank. [1/2 definitions]
screw eye a screw with a loop or eyelet for a head.
screw hook a screw with an elongated head in the shape of a hook.
screw thread the continuous helical ridge or groove on the outer surface of a screw or the inner surface of a nut.
setscrew an often headless screw that holds one piece firmly against another. [2 definitions]
simple machine any of various devices that function in a manner basic to any machine, such as a lever, pulley, wedge, screw, or inclined plane.
squinch2 to screw up or contort (the face, nose, or the like). [1/4 definitions]
tap2 a tool for cutting a screw thread inside a cylindrical opening. [2/9 definitions]
thread the helical or spiral ridge on a screw or screwing device. [1/12 definitions]