How does the word sound?
History of this Word
"shoulder" is from "sculdor", 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.
Definition
A part of a screw or bolt below the head that has no thread and provides a smooth surface that can tightly mesh with an object. Designed into the screw or bolt. Can be various sizes.
Examples of how the word is used
| A shoulder bolt is a special kind of bolt. It has an unthreaded length which is precisely machined, both as to length and diameter. |
| A coil spring held with a shoulder screw provides the preload for each coupling. |