Glossary entry (derived from question below)
English term or phrase:
Neck down a bolt
English answer:
reduce the diameter by overtightening
Added to glossary by
Anthony Indra
Feb 9, 2005 15:03
19 yrs ago
3 viewers *
English term
United States
Translation by an Engineer & MBA!
Native in: Indonesian 
Works in: English to Indonesian, Japanese to Indonesian, German to Indonesian, and 3 more.
Neck down a bolt
Non-PRO
English
Tech/Engineering
Mechanics / Mech Engineering
mechanical
What is "neck down" a bolt?
Whole sentence: Never neck down a bolt beyond the bolt thread's minor diameter. Necking down a bolt reduce its strength.
Whole sentence: Never neck down a bolt beyond the bolt thread's minor diameter. Necking down a bolt reduce its strength.
Responses
| 4 +3 | reduce the diameter by overtightening |
Ken Cox
|
Responses
+3
13 mins
Selected
reduce the diameter by overtightening
If a bolt is tightened past a certain point, it deforms by stretching, with the result that its diameter is reduced; if it is tightened past the elastic strain limit of the metal the reduction in diameter is permanent. This can often be seen afterwards in a reduced-diameter 'neck' in the shaft of the bolt where the highest stress occurred.
4 KudoZ points awarded for this answer.
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