BS 6104-1-1981 Mechanical Properties of Fasteners Part 1 Bolts, Screws and Studs - Discuz! Board
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ID： |
A4E52957CBEB47C4A06537B33160AE00 |
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文件大小(MB)： |
1.58 |
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页数： |
20 |
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日期： |
2024-6-23 |
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文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
BS 6104: Part 1 :1981,UDC 621.882:620.17,?Mechanical properties of fasteners,Part 1. Specification for bolts, screws and studs,Caract6ristiques' mecaniques des elements de fixation,Partie 1. Specification des boulons, vis, goujons et ecrous,Mechanische Eigenschaften von Befestigungsteilen,Teil 1. Spezifikation fur Bolzen, Schrauben und Gewindestiften,British Standards Institution,BS6104 : Part 1 : 1981,Contents,Page Page,Foreword Inside front cover 7. Proof loads - ISO metric coarse thread 7,Cooperating organizations Back cover 8, Minimum ultimate tensile loads — ISO metric,fine thread 8,Specification 9. Proof loads — ISO metric fine thread 8,1. Scope and field of application 1 10. Wedge dimensions 11,2. References 1 11. Value of angle 12,3, Designation system 1 12. Values for and E 13,4. Materials 3 13. Marking symbols 14,5. Mechanical properties 4 14. Identification marks for studs 15,6. Mechanical properties to be determined,7. Minimum ultimate tensile loads and,5,Figures,proof loads 7 1, Test piece for tensile test 9,8. Test methods 9 2. Application of proof load to full size bolt ' 10,9. Marking 14 3, Wedge loading of full size bolts 11,4, Head soundness test 12,Tables 5. Zones of decarburization 12,1. System of co-ordinates 2 6. Hardness measurements for decarburization,2. Steels 3 test 13,3. Mechanical properties of bolts, screws and 7. Examples of marking hexagon bolts and,studs 4 screws 14,4, Key to test programmes 5 8. Examples of marking hexagon socket head,5. Test programmes A and B for acceptance cap screws 14,purposes 6 9. Marking of stud 15,6. Minimum ultimate tensile loads - !SO metric 10. Left-hand thread marking 15,coarse thread 7,Foreword,This British Standard has been prepared under the,direction of the Mechanical Engineering Standards,Committee, It is one of a series of specifications,of which the full list is as follows:,Part 1. Specification for bolts, screws and studs,Part 2, Specification for nuts with specified proof,load *values,Part 3. Specification for set screws and similar threaded,fasteners not under tensile stresses.,This Part of this standard Is based on ISO 898/1-1978,/Mechanical properties of fasteners - Part 1 : Bolts,screws and studs' published by the International,Organization for Standardization (ISO). With the,following exceptions its technical content agrees with,ISO 898/1:,The wedge angle for property class 10.9 has been reduced,to align with existing UK practice. The obligatory marking,for property classes 4.6 and 5.6 has been excluded,this marking was included in ISO 898/1 to satisfy the,requirements of the European pressure vessel industry.,The 'notch' marking to indicate a left-hand thread has,also been excluded.,For ease of production it has been found convenient to,reproduce the text of ISO 898/1, amended to incorporate,the differences outlined above. 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 base line as the decimal marker.,NOTE, ISO 898ハ978, on which this standard is based, is in the,course of a major revision which is likely to give rise to extensive,alterations to the mechanicarproperties of heat treated bolts,screws and studs.,It is recommended that until this standard is revised, incorporating,the published revision of ISO 898/1, reference should be made to,BS 3692 for the mechanical properties of heat treated hexagon,bolts and screws and to BS 4439 for heat treated studs.,Hexagon socket screws to BS 4168 : Parts 1( 6, 7 and 8 are not,affected/,*n course of preparation,BS6104 : Part 1 : 1981,British Standard,Mechanical properties of fasteners,Part 1. Specification for bolts, screws and studs,1 SCOPE AND FIELD OF APPLICATION,This British Standard specifies the mechanical properties of,bolts, screws and studs.,It applies to bolts, screws and studs," with nominal diameters up to and including 39 mm;,一 of any triangular ISO thread and with diameters and,pitches according to BS 3643.,一 of any shape;,- made of carbon steel or alloy steel.,It does not apply to set screws and similar threaded,fasteners.,(t does not specify requirements for such properties as,2一,-corrosion resistance;,一 ability to withstand temperature above 4- 300 0C,or below - 50 0C.,NOTE — The designation system of this British Standard may,be used for sizes outside the limits laid down in the scope (i.e. larger,sizes than 39 mm) provided that all mechanical requirements of the,property classes are met.,2 REFERENCES,The titles of the standards publicatio……
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