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 History of this Word

"neck" is from "hnecca", spoken by people in England during 450-1100 A.D.

"screw" is from "escroue" (hole that a screw turns in), spoken in France during 1000-1400 A.D.
which was from "scrofa" (sow, threads of a screw look like the curl of a sow's tail), spoken by ancient people in central Italy around 700 B.C.

"bolt" is from "bolt" (arrow), spoken by people in England during 450-1100 A.D.

Notes

The neck is often thought to be part of the screw or bolt but not part of the head.

Words related to this meaning

grammar is noun

"neck" is a part of carriage bolt, screw

Definition

neck illustration Smaller part of the head next to the shaft of a screw or bolt - Unthreaded shaft next to the head. Meshes with an object and prevents rotation relative to object. Designed into the head. Can be various shapes.

Examples of how the word is used

neck illustration Insert square neck bolt through square hole opening
neck illustration The tapered diameter is the largest at the screw neck prohibiting screw breakage.