BS 1580-3:2007

BS 1580-3:2007

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

Status : Confirmed, Current   Published : December 2007

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BS 1580-3 specifies limits of sizes, and tolerances, for single-start, clearance-fit unified screw threads, in inch units with diameters below 1/4 in.

BS 1580-3 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.

This part of BS 1580 is intended for use with BS 919-1 which specifies the corresponding screw gauges.

BS 1580-3 contains:

  • Normative references
  • Terms and definitions and symbols
  • Thread profiles
  • Diameter/pitch combinations
  • Tolerance classes
  • Tolerances, allowances and limits of size for uncoated threads
  • Coated threads
  • Designation of threads
  • Gauges

BS 1580-3:2007 supersedes BS 1580-3:1965, which is withdrawn.




Standard NumberBS 1580-3:2007
TitleUnified screw threads. Screw threads with diameters below ¼ in. Requirements
StatusConfirmed, Current
Publication Date31 December 2007
Confirm Date01 November 2017
Normative References(Required to achieve compliance to this standard)BS 1981, BS 6528:1984, BS 919-1:2007, BS 1580-1:2007
Informative References(Provided for Information)BS 3382:Parts 1 & 2, BS 93, BS 3382-7
ReplacesBS 1580-3:1965
Draft Superseded By07/30158492 DC
DescriptorsUnified screw threads, Thread forms, Diameter, Metal coatings, Dimensions, Bolts, Thread gauges, Dimensional tolerances, Aircraft components, Diameter measurement, Threads, Nuts
ICS21.040.20
Title in FrenchFiletages Unified. Specification. Diametres inferieurs a ¼ pouce
Title in GermanUST-Schraubgewinde. Spezifikation. Durchmesser unter ¼ Zoll
CommitteeFME/9
ISBN978 0 580 57927 1
PublisherBSI
FormatA4
DeliveryYes
Pages24
File Size271 KB
Price£186.00


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