Whitworth screw thread system
E910894
The Whitworth screw thread system is a standardized screw thread form introduced in the 19th century that became one of the first widely adopted engineering standards for fasteners in Britain and internationally.
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
engineering standard
ⓘ
screw thread standard ⓘ thread form ⓘ |
| applicationRegion |
British Empire
NERFINISHED
ⓘ
Commonwealth countries NERFINISHED ⓘ United Kingdom NERFINISHED ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| crestForm | rounded crest ⓘ |
| designFeature |
fixed thread angle of 55 degrees across sizes
ⓘ
rounded roots to reduce stress concentration ⓘ |
| designGoal |
interchangeability of threaded components
ⓘ
simplification of manufacturing ⓘ |
| fieldOfUse |
civil engineering structures using bolted joints
ⓘ
manufacturing engineering ⓘ mechanical engineering ⓘ |
| hasVariant |
British Standard Fine
NERFINISHED
ⓘ
British Standard Pipe thread NERFINISHED ⓘ British Standard Whitworth NERFINISHED ⓘ |
| historicalSignificance |
foundation for later British fastener standards
ⓘ
one of the earliest widely adopted engineering standards ⓘ |
| historicalUse |
general mechanical engineering
ⓘ
railway engineering ⓘ shipbuilding ⓘ steam engines ⓘ |
| influenced |
British Standard Pipe thread
NERFINISHED
ⓘ
Unified Thread Standard NERFINISHED ⓘ |
| introducedBy | Joseph Whitworth NERFINISHED ⓘ |
| introducedInCentury | 19th century ⓘ |
| introducedInYear | 1841 ⓘ |
| measurementSystem | imperial ⓘ |
| namedAfter | Joseph Whitworth NERFINISHED ⓘ |
| pitchUnit | threads per inch ⓘ |
| rootForm | rounded root ⓘ |
| standardizationImpact |
facilitated interchangeability of fasteners
ⓘ
reduced diversity of screw thread forms in British industry ⓘ |
| standardizingBody | British Standards Institution predecessor ⓘ |
| supersededBy |
ISO metric screw thread
NERFINISHED
ⓘ
Unified Thread Standard NERFINISHED ⓘ |
| threadAngle | 55 degrees ⓘ |
| threadProfile | symmetrical V-thread ⓘ |
| threadSeries | coarse thread series ⓘ |
| threadStandardizationRole | one of the first national screw thread standards ⓘ |
| usedFor |
bolts
ⓘ
machine screws ⓘ nuts ⓘ studs ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.