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immediate downloadReleased: 2007-12-31
BS 1580-3:2007
Unified screw threads Screw threads with diameters below ¼ in. Requirements
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270.40 USD
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| Standard number: | BS 1580-3:2007 |
| Pages: | 24 |
| Released: | 2007-12-31 |
| ISBN: | 978 0 580 57927 1 |
| Status: | Standard |
DESCRIPTION
BS 1580-3:2007
This standard BS 1580-3:2007 Unified screw threads is classified in these ICS categories:
- 21.040.20 Inch screw threads
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 
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
in diameter for attachment purposes and for general use in the aircraft industry are specified in Annex A.