AS/NZS 4291.2:1995
Superseded
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Mechanical properties of fasteners Nuts with specified proof load values - Coarse thread
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English
05-09-1995
30-06-2017
Specifies materials, mechanical properties and marking requirements for steel nuts of property classes 4, 5, 6, 8, 9, 10 and 12 with ISO metric coarse pitch threads and diameters up to and including 39 mm. The property class system is explained and test methods for determination of mechanical properties are given. Identical with and reproduced from ISO 898-2:1992.
| Committee |
ME-029
|
| DocumentType |
Standard
|
| ISBN |
0 7262 9813 1
|
| Pages |
16
|
| PublisherName |
Standards Australia
|
| Status |
Superseded
|
| SupersededBy | |
| UnderRevision |
This International Standard specifies the mechanical properties of nuts with specified proof load values when tested at room temperature (see ISO 1). Properties will vary at higher and lower temperature.It applies to nuts- with nominal thread diameters up to and including 39 mm;- of triangular ISO thread and with diameters and pitches according to ISO 68 and ISO 262 (coarse thread);- with diameter/pitch combinations according to ISO 261 (coarse thread);- with thread tolerances 6H according to ISO 965-1 and ISO 965-2;- with specific mechanical requirements;- with widths across flats as specified in ISO 272 or equivalent;- with nominal heights greater than or equal to 0,5D*;- made of carbon steel or low alloy steel.It does not apply to nuts requiring special properties such as- locking abilities (see ISO 2320);- weldability;- corrosion resistance (see ISO 3506);- ability to withstand temperatures above + 300°C or below - 50°C.NOTES1 Nuts made from free-cutting steel should not be used above + 250°C.2 For special products such as nuts for high-strength structural bolting, and overtapped nuts for use with hot dipped galvanized bolts, see the product standards for appropriate values.3 For assemblies with threads having tolerances wider than 6H/6g, there is an increased risk of stripping; see also table 1.4 In the case of thread tolerances other or larger than 6H a decrease of the stripping strength should be considered (see table 1).
| Standards | Relationship |
| ISO 898-2:1992 | Identical |
First published as AS/NZS 4291.2:1995.
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