ДСТУ ISO 898-2:2015 Механічні властивості кріпильних виробів із вуглецевої сталі й легованої сталі. Частина 2

Contents

Foreword

1 Scope

2 Normative references

3 Symbols

4 Designation systems

4.1 Designation of nut styles

4.2 Designation of property classes

4.3 Ranges of nominal diameters in relation to nut style and property class

5 Design of bolt and nut assemblies

6 Materials

7 Mechanical properties

8 Inspection

8.1 Manufacturers inspection

8.2 Supplier s inspection

8.3 Purchaser s inspection

9 Test methods

9.1 Proof load test

9.2 Hardness test

9.3 Surface integrity inspection

10 Marking

10.1 General

10.2 Identification mark of the manufacturer

10.3 Marking of property classes

10.4 Identification

10.5 Marking of left-hand thread

10.6 Marking of packages

Annex A (informative) Design principles of nuts

Annex В (informative) Thread dimensions for the test mandrel

Bibliography

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