BS 1580-3:1965
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for Unified screw threads Diameters below ¼ in
Hardcopy , PDF
English
11-08-1965
31-12-2007
Co-operating organizations
Foreword
Specification
1 Scope
2 ISO/unified thread form
3 Standard thread series
4 Basic sizes
5 Screw thread classes
6 Tolerances allowances and limits of size
7 Designation
8 Gauges
Tables
39 Unified screw threads below 1/4 in diameter,
standard series
40 Unified screw threads below 1/4 in diameter,
standard series. Limits of size
Unified coarse screw thread UNC
41 External threads (bolts). Class 2A
42 Internal threads (nuts). Class 2B
43 External threads (bolts). Class 3A
44 Internal threads (nuts). Class 3B
Unified fine screw threads UNF
45 External threads (bolts). Class 2A
46 Internal threads (nuts). Class 2B
47 External threads (bolts). Class 3A
48 Internal threads (nuts). Class 3B
Unified extra fine screw threads UNEF
49 External threads (bolts). Classes 2A and 3A
50 Internal threads (nuts). Classes 2B and 3B
Basic dimensions
51 Unified coarse thread series, UNC
52 Unified fine thread series, UNF
53 Unified extra fine thread series, UNEF
54 Thread data, unified thread form (24 to 80 t.p.i.)
Appendix
Metric equivalents
Basic sizes, tolerances, allowances and limiting sizes for Unified screw threads from Number 0 (0.060 in diameter) to Number 12 (0.216 in diameter) for Unified fine threads, Number 1 (0.073 in diameter) to Number 12 for Unified coarse threads and Number 12 for the Unified extra fine thread.
| Committee |
FME/9
|
| DevelopmentNote |
Supersedes BS 1580(1953) (07/2004) Reviewed and confirmed by BSI, November, 2004. (11/2004)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| ISO 68:1973 | Similar to |
| UNE-EN ISO 11073-10427:2018 | Identical |
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