UNI EN 14399-9 : 2009
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
HIGH-STRENGTH STRUCTURAL BOLTING ASSEMBLIES FOR PRELOADING - PART 9: SYSTEM HR OR HV - DIRECT TENSION INDICATORS FOR BOLT AND NUT ASSEMBLIES
09-08-2022
01-01-2009
Foreword
Introduction
1 Scope
2 Normative references
3 Direct tension indicators
3.1 Dimensions
3.2 Specifications and reference standards
3.3 Performance test of direct tension indicators
3.4 Test method for measuring compression loads (all
finishes) on direct tension indicators
3.4.1 General
3.4.2 Testing apparatus
3.4.3 Compression loading system
3.4.4 Support blocks
3.4.5 Bearing blocks
3.4.6 Calibration
3.4.7 Test Procedure
3.5 Marking of the direct tension indicator
3.6 Designation of the direct tension indicator
4 Nut face washers and bolt face washers
4.1 Dimensions
4.2 Specifications and reference standards for nut face
washers and bolt face washers
4.3 Marking
4.3.1 Nut face washers
4.3.2 Bolt face washers
4.4 Designation
4.4.1 Nut face washers
4.4.2 Bolt face washers
5 Functional characteristics
5.1 Assemblies
5.2 Functional characteristics of direct tension indicators
in the assembly
5.3 Functional characteristics of the bolt/nut/washer(s)/
direct tension indicator assembly
5.3.1 General
5.3.2 Test procedure
Annex A (informative) Special testing conditions and procedures
Bibliography
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