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SBAC TS 172 Issue 4 (2004)

SBAC TS 172 Issue 4 (2004) Performance Specification For Nut, Union, Metric Threaded, Self-locking, A286 Dry Film Lubricated Covers the technical qualification and quality assurance requirements for self locking union nuts.

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Table of Contents

1.0Scopeandfieldofapplication
2.0References
2.1Controllingorganisations
3.0Definitions
3.1Productionbatch
3.2Inspectionlot
3.3Discontinuities
3.4Testtemperature
3.5Simplerandomsampling
3.6Criticaldefect
3.7Majordefect
3.8Minordefect
3.9Samplingplan
3.10Limitingquality
3.11Acceptablequalitylevel
3.12Finishedunionnut
3.13Definitiondocument
3.14Selflockingtorque
3.15Seatingtorque
3.16Unseatingtorque
3.17Breakawaytorque
3.18Crimp
4.0Certificationandqualityassurance
4.1Qualification
4.2Acceptance
4.3Qualitysystemcertification
4.4Responsibilityforinspectionandtestmethods
4.5Inspectionandtestreport
5.0Table1:Technicalrequirementandtestmethods
5.1Materials
5.2Dimensions;tolerancesofformandposition;
threadsandquality
5.3Manufacturing
5.4Mechanicalproperties
5.5Metallurgicalproperties
5.6Productidentification
5.7Delivery
Table2:Summaryoftests-Qualificationandproduction
acceptance
Table3:Qualificationtestingrequirementsforunion
nutsamples
Table4:Dimensionsandmaterialsofmandrelsfor
permanentsettests
Table5:Valuesforbreakawaytorque;lockingtorque
andassemblytorque
Table6:Dimensionsandmaterialsoftestpiecesfor
reusabilitytests
Table7:Classificationofdefects
Table8:Samplingplansforvisualinspectionsand
dimensionalcharacteristics
Table9:Samplingplansfortheinspectionofmechanical
andmetallurgicalcharacteristics
Table10:Maximumdepthofpermissiblediscontinuities

Abstract

Covers the technical qualification and quality assurance requirements for self locking union nuts.

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