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BSI BS 1580-3:2007

Unified screw threads -- Screw threads with diameters below ¼ in. Requirements
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BSI BS 1580-3:2007

Unified screw threads -- Screw threads with diameters below ¼ in. Requirements

PUBLISH DATE 2007
PAGES 24
BSI BS 1580-3:2007

This part of BS 1580 specifies limits of sizes, and tolerances, for single-start, clearance-fit unified screw threads, in inch units with diameters below image in.

This part of BS 1580 specifies unified screw threads from Number 0 (0.060 in diameter) to Number 12 (0.216 in diameter), known as the “numbered sizes” in the following standard series:

  • a coarse thread (UNC) series;

  • a fine thread (UNF) series;

  • for Number 12 threads, an extra fine (UNEF) 32 threads per inch diameter/pitch combination.

    NOTE Unified screw threads below image in diameter for attachment purposes and for general use in the aircraft industry are specified in Annex A.

SDO BSI: British Standards Institution
Document Number 1580-3
Publication Date Dec. 31, 2007
Language en - English
Page Count
Revision Level
Supercedes
Committee FME/9
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