I.S. EN 20898-1:1991
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Hardcopy , PDF
28-01-2000
English
01-01-1991
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Cooperating organizations
National foreword
Foreword
1. Scope and field of application
2. References
3. Designation system
4. Materials
5. Mechanical properties
6. Mechanical properties to be determined
7. Minimum ultimate tensile loads and proofing loads
8. Test methods
9. Marking
Annex
Properties at elevated temperature
Tables
1. System of coordinates
2. Steels
3. Mechanical properties of bolts, screws and studs
4. Key to test programmes
5. Test programmes A and B for acceptance purposes
6. Minimum ultimate tensile loads - ISO metric coarse
pitch thread
7. Proofing loads - ISO metric coarse pitch thread
8. Minimum ultimate tensile loads - ISO metric fine
pitch thread
9. Proofing loads - ISO metric fine pitch thread
10. Hole diameters for wedge loading test
11. Wedge dimensions
12. Values of angle beta
13. Values for H1 and E
14. Marking symbols
15. Identification marks for studs
16. Properties at elevated temperature
Figures
1. Test piece for tensile test
2. Application of proofing load to full-size bolts
3. Wedge loading of full-size bolts
4. Head soundness test
5. Zones of decarburization
6. Hardness measurements for decarburization test
7. Examples of marking on hexagon bolts and screws
8. Examples of marking on hexagon socket head cap screws
9. Marking of stud
10. Left-hand thread marking
11. Alternative left-hand thread marking
National annex NA (informative)
National annex NB (informative)
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