BS 1804-3-1973 Specification for parallel steel dowel pins - Parallel and taper types having screw threads for extraction purposes - Metric series《钢制直销钉规范 带螺纹取出用直的和圆锥型销钉 米制系列》.pdf
《BS 1804-3-1973 Specification for parallel steel dowel pins - Parallel and taper types having screw threads for extraction purposes - Metric series《钢制直销钉规范 带螺纹取出用直的和圆锥型销钉 米制系列》.pdf》由会员分享,可在线阅读,更多相关《BS 1804-3-1973 Specification for parallel steel dowel pins - Parallel and taper types having screw threads for extraction purposes - Metric series《钢制直销钉规范 带螺纹取出用直的和圆锥型销钉 米制系列》.pdf(14页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARD BS1804-3: 1973 Incorporating Amendment Nos.1 and2 Specification for Steel dowel pins Part3: Parallel and taper types having screw threads for extraction purposes. Metric series UDC 621.882.219.4BS1804-3:1973 This British Standard, having been approved by the MechanicalEngineering In
2、dustryStandards Committee,was published underthe authority ofthe Executive Board on 15 May1973 BSI06-1999 The following BSI references relate to the work on this standard: Committee reference MEE/60/5 Draft for comment69/8772 ISBN 0 580 07933 3 Co-operating organizations The Mechanical Engineering I
3、ndustry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: The industrial organization marked with an asterisk in the above list, together with the followi
4、ng, were directly represented on the committee entrusted with the preparation of this British Standard. Associated Offices Technical Committee Engineering Equipment Users Association Association of Consulting Engineers Gas Council Association of Hydraulic Equipment Institution of Civil Engineers Man
5、ufacturers Ltd Institution of Gas Engineers Association of Mining Electrical and Institution of Heating and Ventilating Mechanical Engineers Engineers British Compressed Air Society Institution of Mechanical Engineers British Electrical and Allied Manufacturers Institution of Mechanical Engineers As
6、sociation (Automobile Division) British Gear Manufacturers Association Institution of Plant Engineers British Internal Combustion Engine Institution of Production Engineers Manufacturers Association* London Transport Executive British Mechanical Engineering Confederation Machine Tool Trades Associat
7、ion British Pump Manufacturers Association Ministry of Defence British Steel Corporation Ministry of Defence, Army Department British Steel Industry National Coal Board Crown Agents for Oversea Governments and National Physical Laboratory (Department of Administrations Trade and Industry) Department
8、 of Employment Process Plant Association Department of the Environment Railway Industry Association of Great Britain Department of Trade and Industry Royal Institute of British Architects Department of Trade and Industry National Telecommunications Engineering Engineering Laboratory Manufacturing As
9、sociation Electricity Council, the Central Electricity Generating Board and the Area Boards in England and Wales Cotter Pin Association Society of Motor Manufacturers and Traders Institute of Iron and Steel Wire Manufacturers Amendments issued since publication Amd. No. Date of issue Comments 4307 N
10、ovember1983 8360 November1994 Indicated by a sideline in the marginBS1804-3:1973 BSI 06-1999 i Contents Page Co-operating organizations Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 Materials 1 4 Hardness 1 5 Dowel pins in blind holes 1 6 Dimensions 1 7 Surface texture 1 8 Anti-corrosio
11、n treatment 1 9 Designation 1 10 Marking 2 11 Inspection 2 12 Information to be supplied by the purchaser 2 Appendix A Fitting dowel pins into blind holes 3 Figure 1 Type A dowel pin with air release flat 3 Figure 2 Type B dowel pin with air release flat 3 Table 1 Dimensions of type A parallel dowel
12、 pins with external thread 4 Table 2 Dimensions of type B parallel dowel pins with internal thread 5 Table 3 Dimension of type C taper dowel pins with external thread 6 Table 4 Dimensions of type D taper dowel pins with internal thread 7 Publications referred to 8BS1804-3:1973 ii BSI 06-1999 Forewor
13、d Obsolescent (by Amendment No. 2) The need for the pins covered by this British Standard has been reviewed and it as been decided that, in the interests of rationalization, they should be regarded as obsolescent. Their use for new designs is not therefore recommended. The standard will be withdrawn
14、 in due course. This part of this British Standard has been prepared under the authority of the Mechanical Engineering Industry Standards Committee and is intended to form a companion volume to Parts1 and2 of BS1804, both of which have already been published. In order to avoid confusion about the me
15、aning of the word dowel pin, the term “precision ground dowel pin” has been defined. Dowel pins are normally used to locate two or more components to a required degree of accuracy, and only one grade has been standardized. Attention is called specially to the danger which may arise when fitting para
16、llel dowel pins into blind holes. A suggestion for preventing this danger is made in the appendix. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard d
17、oes not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This
18、 will be indicated in the amendment table on the inside front cover.BS1804-3:1973 BSI 06-1999 1 1 Scope This British Standard specifies requirements for cylindrical parallel and taper steel dowel pins, having either external or internal threads for extraction purposes. The dowel pins are generally i
19、ntended for use where accurate location of components relative to each other is required. Only one grade of accuracy is provided as follows: Grade 1. Precision ground parallel and taper dowel pins. The following types of dowel pin are included. Type A. Parallel dowel pin with external thread Type B.
20、 Parallel dowel pin with internal thread Type C. Taper dowel pin with external thread Type D. Taper dowel pin with internal thread NOTEThe titles of the British Standards referred to in this Standard are listed on the inside back cover. 2 Definitions For the purposes of this British Standard, the fo
21、llowing definitions apply. 2.1 dowel pin the generic term which refers to the types of locating pins as defined in2.2 and2.3 below 2.2 precision ground parallel dowel pin a grade 1 steel dowel pin having a ground finish and conforming to the total diametrical tolerance given in Table 1 and Table 2 2
22、.3 precision ground taper dowel pin a grade1 steel dowel pin having a ground finish, and conforming to the tolerances given in Table 3 and Table 4 3 Materials Dowel pins shall be manufactured from steels as follows. Types A and B steel dowel pins shall be manufactured from080M15 steel in accordance
23、with BS970-1 or from steels having equivalent mechanical properties. Types C and D steel dowel pins shall be manufactured from220M07 steel in accordance with BS970 or from steels having equivalent mechanical properties. Alternatively dowel pins of all types may be manufactured from steel in accordan
24、ce with BS1407, at the option of the purchaser, the choice being indicated at the time of ordering. 4 Hardness The dowel pins shall be supplied in accordance with the following requirements. Types A and B steel dowel pins manufactured from080M15 steel in accordance with BS970-1 shall be case hardene
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