BS 6104-3-1981 Mechanical properties of fasteners. Part 3 Specification for set screws and similar threaded fasteners not under tensile
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397C3998AC294E8188AC291287DF2F50 |
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0.76 |
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9 |
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日期： |
2024-6-23 |
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BS 6104: Part3 :1981,ISO 898/5-1980,UDC 621.882: 620.17+620.882.2: 620.17,Mechanical properties of fasteners,Part 3, Specification for set screws and similar threaded,fasteners not under tensile stresses,Caracteristiques mecaniques des elements de fixation,Partie 3. Specification des vis sans tete et des elements de fixation filetes similaires non soumis a,des contraintes detraction,Mechanische Eigenschaften von Befestigungsteilen,Teil 3. Spezifikation fur Regulierschrauben und andere nicht unter Spannung stehende,Befestigungsteile mit Gewinde,British Standards Institution,BS6104:Part3: 1981,Contents,Page Page,National foreword Inside front cover Tables,Cooperating organizations Back cover 1. Designations of property classes in relation to,Vickers hardness 1,Specification 2. Steel specifications 2,1. Scope and field of application 1 3. Mechanical properties 2,2. References 1 4. Values for/ and￡ 4,3. Designation system 1 5. Torque requirements 5,4. Raw materials 2,5. Mechanical properties 2 Figures,6. Test methods for determination of 1. Untitled 3,mechanical properties 3 2. Untitled 4,7. Marking 6 3. Torque test details 5,National foreword,This British Standard has been prepared under the direction of the Mechanical Engineering Standards Committee. This,Part of the standard is identical with ISO 898/5-1980 'Mechanical properties of fasteners—Part 5 : Set screws and,similar threaded fasteners not under tensile stresses1. The United Kingdom has taken an active part in the work of,Technical Committee ISO/TC 2, Fasteners, of the International Organization for Standardization (ISO).,The other Parts of this standard are as follows:,Part 1 'Specification for screws and studs',Part 2 'Specification for nuts with specified proof load values'.,Terminology and conventions. The text of the international standard has been approved as suitable for publication as a,British Standard without deviation. Some terminology and certain conventions are not identical with those used in,British Standards; attention is especially drawn to the following.,The comma has been used throughout as a decimal marker. In British Standards it is current practice to use a full point,on the baseline as the decimal marker.,Where the words 'International Standard* appear, referring to this standard, they should be read as 'British Standard".,Cross-references,International standard,ISO/R 80-1968,ISO/R 81-1967,Corresponding British Standard,BS 891 Method for Rockwell hardness test,Part 1 :1962 Testing of metals,(Technically equivalent),BS 427 Method for Vickers hardness test,Part 1 :1 961 Testing of metals,(Technically equivalent),The Technical Committee has reviewed the provisions of ISO/R 79-1968 referred to in the text, and has decided that,they are acceptable for use in conjunction with this standard.,The British Standard related to ISO/R 79 is BS 240 : Part 1 :1962.,ISO 6157/1, at present at the stage of draft, will be implemented as a British Standard in due course.,Additional information. The 'set screws' referred to in this standard are generally known in the United Kingdom as,'grub screws".,Attention is drawn to the limitation of use in that screws complying with the requirements of this specification are,intended for use under conditions that induce compressive stresses only: they should not be used with locknuts or other,means that induce tensile stresses.,Omission of captions to figures. In the international standard, the captions to figures 1 and 2 have been omitted. For the,sake of clarity, the following are appropriate:,Figure 1. Zones of decarburization,Figure 2, Hardness measurements for decarburization tests.,The Technical Committee responsible for this British Standard has proposed to the ISO committee that these captions,should be included in the international standard.,BS6104:Part3:198V,British Standard .,Mechanical properties of fasteners,Part 3. Specification for set screws and similar threaded fasteners not under tensile stresses,1 Scope and field of application,This International Standard specifies the mechanical properties,of set screws and similar fasteners not under tensile stresses in,the range from 1,6 up to and including 39 mm thread diameter,which are made of carbon steel or alloy steel.,It does not apply to screws requiring special properties such as,— specified tensile stresses (see ISO 898/1);,一 weldability;,— corrosion resistance (see ISO 3506);,— ability to withstand temperatures above + 300 ℃ or,below - 50 ℃.,NOTE — Screws made from free-cutting steel should not be used,above + 250 ℃. ,2 References,ISO/R 79, Brinell hardness test for steel.,ISO/R 80, Rockwell hardness test (B an……
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