This document specifies the mechanical and physical properties of nuts made of non-alloy steel or alloy steel, when tested at the ambient temperature range of 10 \u00b0C to 35 \u00b0C. This document applies to nuts: \u2014 with ISO metric thread (see ISO 68-1), \u2014 with diameter\/pitch combinations according to ISO 261 and ISO 262, \u2014 with coarse pitch thread M5 to M39, and fine pitch thread M8\u00d71 to M39\u00d73, \u2014 with thread tolerances according to ISO 965-1, ISO 965-2 or ISO 965-5, \u2014 with specified property classes 04, 05, 5, 6, 8, 10 and 12 including proof load, \u2014 of three different nut styles (see 5.1): regular nuts (style 1), high nuts (style 2) and thin nuts (style 0), \u2014 with a minimum outside diameter or width across flats s ? 1,45D, \u2014 able to mate with bolts, screws and studs with property classes in accordance with ISO 898-1 (see Annex B), and \u2014 intended to be used in applications ranging from \u201350 \u00b0C to +150 \u00b0C, or up to +300 \u00b0C. WARNING \u2014 Nuts conforming to the requirements of this document are tested at the ambient temperature range of 10 \u00b0C to 35 \u00b0C and are used in applications ranging from \u201350 \u00b0C to +150 \u00b0C; however, these nuts are also used outside this range and up to +300 \u00b0C for specific applications. It is possible that they do not retain the specified mechanical and physical properties at lower and\/or elevated temperatures. Therefore, it is the responsibility of the user to determine the appropriate choices based on the service environment conditions of the assembly (see also 7.1). For additional specifications applicable to hot dip galvanized nuts, see ISO 10684. For nuts designed for particular applications, see ISO\/TR 16224. This document does not specify requirements for functional properties such as: \u2014 prevailing torque properties (see ISO 2320), \u2014 torque\/clamp force properties (see ISO 16047 for test method), \u2014 weldability, or \u2014 corrosion resistance.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 4<\/td>\n | European foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 1 Scope <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 2 Normative references 3 Terms and definitions 4 Symbols <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 5 Designation systems 5.1 Nut styles 5.2 Property classes 5.2.1 Regular nuts (style 1) and high nuts (style 2) <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 5.2.2 Thin nuts (style 0) 6 Design of bolt and nut assemblies 7 Material, heat treatment, chemical composition and steel microstructure 7.1 General <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 7.2 Heat treatment 7.3 Chemical composition <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 7.4 Steel microstructure 7.4.1 Non-quenched and tempered nuts 7.4.2 Quenched and tempered nuts 8 Mechanical and physical properties 8.1 General 8.2 Proof load <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 8.3 Hardness <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 8.4 Surface integrity 9 Inspection 9.1 Manufacturer’s inspection 9.2 Supplier’s inspection 9.3 Purchaser’s inspection <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 9.4 Delivery of test results 10 Test methods 10.1 Proof load test 10.1.1 General 10.1.2 Applicability 10.1.3 Apparatus 10.1.4 Testing device <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 10.1.5 Test procedure <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 10.1.6 Test results and requirements 10.2 Hardness tests 10.2.1 General 10.2.2 Applicability 10.2.3 Test methods 10.2.4 Test procedures for routine inspection <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 10.2.5 Hardness determined in the thread <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 10.2.6 Hardness determined in the core <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 10.2.7 Uniformity of hardness for quenched and tempered nuts (QT) 10.2.8 Requirements for non-quenched and tempered nuts (NQT) 10.2.9 Requirements for quenched and tempered nuts (QT) 10.3 Steel microstructure 10.3.1 General 10.3.2 Applicability 10.3.3 Test method <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 10.3.4 Test results and requirements 10.4 Retempering test 10.4.1 General 10.4.2 Test procedure 10.4.3 Test results and requirements 10.5 Surface discontinuity inspection 11 Marking and labelling 11.1 General requirements <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 11.2 Property class marking symbols for nuts with full loadability <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 11.3 Property class marking symbols for nuts with reduced loadability 11.4 Manufacturer\u2019s identification mark 11.5 Nut marking <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 11.6 Marking of the packages (labelling) <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Annex A (normative) Thread dimensions of the test mandrel <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Annex B (informative) Design principles for nuts <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Annex C (informative) Stress under proof load, SP <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Fasteners. Mechanical properties of fasteners made of carbon steel and alloy steel – Nuts with specified property classes<\/b><\/p>\n |