BS 64-1992 Specification for normal and high strength steel bolts and nuts for railway rail fishplates《铁路鱼尾板用的标准和高强度钢螺栓和螺母规范》.pdf

1、BSI BS*b4 OL Lb24bb 0423bb4 790 BRITISH STANDARD Specification for Normal and high strength steel bolts and nuts for railway rail fishplates BS 64 : 1992 I BSI BSXb4 01 L624bb 0423665 b27 m BS 64 : 1992 This British Standard, having been prepared under the direction of the Iron and Steel Standards P

2、olicy Committee. was published under the authority of the Standards Board and comes into effect on 15 November 1992 0 BSI 1992 First published 1913 Second edition April 1946 Third edition Novemher 1992 The following BSI references relate to the work on this standard: Committee reference ISMi74 Draft

3、 for comment 90137027 1)C ISBN O 580 20981 4 Cornmittees responsible for this British Standard The preparation of this British Standard was entrusted by the Iron and Steel Standards Policy Committee (ISM/-) to Technical Committee ISMi74, upon which the following bodies were represented: British Indu

4、strial Fasteners Federation British Railways Board British Steel Industry Department of Transport (Transport Industries) London Underground Ltd. Railway Industry Association of Great Britain Amendments issued since publication Amd. No. I Date ! ES1 BS+b4 O1 = 1b2Ybb 0423666 563 m BS 64 : 1992 Conten

5、ts Page Committees responsible Inside front cover Foreword 2 Specification 1 Scope 3 2 References 3 3 Material 4 Manufacture 3 3 5 Heat treatment 3 6 Mechanical properties 7 Dimensions and tolerances 8 Quality control 9 Marking 10 Protective coating Annexes A (informative) Information to be supplied

6、 by the purchaser B (informative) Basic sizes of British Standard screw threads for bolts and nuts lhbles 1 Minimum proof loads and minimum and maximum ultimate tensile loads for British Standard Whitworth (BSW) screw threads 2 Minimum proof loads and minimum and maximum ultimate tensile loads for B

7、ritish Standard fine (BSF) screw threads 3 Mechanical properties for test pieces machined from bolts 4 Hardness requirements for nuts 5 Dimensions of cup/pear and padpear fichbolts and nuts for fishplates with pear shaped holes 6 Dimensions of square headed fishbolts and nuts for flat bottom rails w

8、ith round holes B.l Limits and tolerances of British Standard Whitworth screw threads for medium fit bolts B.2 Limits and tolerances of British Standard Whitworth screw threads for medium fit nuts B.3 Limits and tolerances of British Standard fine screw threads for medium fit bolts B.4 Limits and to

9、lerances of British Standard fine screw threads for medium fit nuts 11 4 4 5 5 7 9 11 11 12 12 Figures 1 shaped holes 7 2 Square-headed fishbolts and nuts 9 Cup/pear and padpear fishbolts and nuts for fishplates with pear List of references Inside back cover i BSI BSXb4 01 Lb24bb9 0423667 4TT BS 64

10、: 1992 Foreword This British Standard has been prepared under the direction of the Iron and Steel Standards Policy Committee and supersedes BS 64 : 1946 which is withdrawn. In this revision the requirements for fishbolts have been rationalized and updated to ensure compatibility with BS 11 and BS 47

11、 : Part 1. Purchasers ordering to this standard are advised to specify in the purchasing contract that the supplier operates a quality system in compliance with BS 5750 : Parts 1, 2 or 3 as relevant to assure to their satisfaction that products claimed to comply with BS 64 consistently achieve the r

12、equired level of quality. Marking BS 64 on or in relation to a product is a claim by the manufacturer that the product has been manufactured to the requirements of this standard. The accuracy of such a claim is therefore the sole responsibility of the manufacturer. Compliance with a British Standard

13、 does not of itself confer immunity from legal obligations. 2 BSI BSXb4 O1 M 1624bb 0423668 336 BS 64 : 1992 Specification 1 Scope This British Standard specifies the dimensions and requirements for normal and high strength bolts and nuts for fishplates conforming to BS 47 : Part 1 : 1991 for use wi

14、th railway raiis conorming to BS 11 : 1985. The provisions of this specification are not restricted to fishbolts for use with rails and fishplates conforming to BS 11 : 1985 and BS 47 : Part 1 : 1991 and may be applied to fishbolts for any rail section of 24.8 kg/m (50 Ib/yd) or greater linear mass

15、and the complementary fishplates. 2 References 2.1 Normative references This British Standard incorporates, by reference, provisions from specific editions of other publications. These normative references are cited at the appropriate points in the text and the publications are listed on the inside

16、back cover. Subsequent amendments to, or revisions of, any of these publications apply to this British Standard only when incorporated in it by updating or revision. 2.2 Informative references This British Standard refers to other publications that provide information or guidance. Editions of these

17、publications current at the time of this standard are listed on the inside back cover, but reference should be made to the latest editions. 3 Material The steelmaking process and grade of steel shall be at the discretion of the manufacturer to obtain the mechanical properties specified in clause 6.

18、The sulfur and phosphorus content shall not exceed 0.06 %. 4 Manufacture Bolts shall be produced by hot or cold forging. Nuts shall be hot or cold forged or machined from bar. Bolts and nuts shall be free from manufacturing defects adversely affecting their behaviour in service. No manufacturing ope

19、rations shall be carried out with the object of concealing defects. 5 Heat treatment Bolts and nuts shall be heat treated when necessary to obtain the mechanical properties given in clause 6. Cold forged bolts shall be thermally stress relieved. No heat treatment shall be applied which would adverse

20、ly affect the performance of the fishbolts or nuts in service. 6 Mechanical properties 6.1 General After manufacture, including heat treatment if applied, bolts and nuts shall be tested to ascertain the mechanical properties of the batch. Representative samples or test pieces prepared shall not be s

21、ubjected to additional heat treatment prior to testing. 6.2 Frequency of testing The following rates of testing shall apply: a) normal b) high strength one per 5 t batch (or part thereof) per cast; one per cast per diameter per heat treatment batch. 6.3 Bolts 6.3.1 General The test method given in 6

22、.3.2 or 6.3.3 shal be used. 6.3.2 Full size bolts 6.3.2.1 Strength under wedge loading When tensile tested on a 4O angled washer in accordance with BS EN 20898 : Part 1 : 1992 the ultimate tensile load shall conform to tables 1 and 2 as appropriate. The fracture shall occur in the shank or threaded

23、portion of the bolt and not between the head and the shank. 6.3.2.2 Proof load test When proof load tested in accordance with BS EN 20898 : Fart 1 : 1992 high strength grade bolts shall conform to tables 1 or 2 as appropriate. 6.3.3 Machined test pieces -om full size bolts) When tested in accordance

24、 with BS EN 10002-1 : 1990 the bolts shall have the mechanical properties given in table 3. 6.4 Nuts When tested in accordance with the appropriate British Standard the nuts shall have the hardness values given in table 4. 6.5 Retests If any of the mechanical tests carried out fail to conform to 6.1

25、 to 6.4, two further retests from the same batch of fishbolts or nuts shall be taken. If one or both of the retests is not satisfactory the corresponding batch shall not have conformed to this British Standard. In the event of failure to meet the mechanical test requirements, the manufacturer shall

26、have the right to reheat treat the batch not more than twice and to resubmit it for testing. 1 BSI BS*b4 O1 1b24bb9 04236b9 272 m BS 64 : 1992 o Y .I E 5% .5 ; $5 U d 4 8 4 BSI BS*b4 O2 m Lh24bb 0423670 T94 m BS 64 : 1992 Normal High strength 1 lble 3. Mechanical properties for test pieces machined

27、from bolts Minimum 0.2 % proof strength Nimm Nimm2 - 550 to 700 835 1000 to 1150 Tensile strength 1 I Strength grae Brinell hardness, HB, F = 30 (see BS 240 : 1986) min. max. min. max. min. max. min. max. HB HB MRB HRB HRC HRC HV HV Rockwell hardness, HR (see BS s91 : 1989) Vickers hardness, HV (see

28、 BS 427 : 1990) (Gauge length 5.65JS0) High strength grade 19 201 271 93 N/A N/A 28 200 286 I 7 Dimensions and tolerances 7.1 General Fishbolts and nuts shall conform to tables 5 and 6; bearing surfaces shall be perpendicular to the axes of the threads within 2O. 7.2 Tolerances on fishbolt length Fo

29、r all fishbolt lengths the tolerances on length shall be +i in for diameters below 1 in and +i in for diameters 1 in and over. 7.3 Tolerance on thread length For all fishbolt diameters the permissible tolerance on the nominal thread length shall be + pitches. 7.4 Screw thread NOTE. The screw thread

30、required (BSW or BSF) should be stated by the purchaser at the time of placing the order (see annex Ae). A British Standard Whitworth or British Standard fine thread form shall be used, conforming to the medium class tolerance of BS 84 : 1956 (see annex B). 7.5 Gauging Gauges used to establish confo

31、rmity with dimensions and tolerances shall be included in the manufacturers calibration system for periodic checking to confirm their accuracy and be traceable to national standards. 8 Quality control The manufacturer shall inspect all batches of fishbolts and nuts and ensure that they conform to th

32、is British Standard. AU nonconforming batches shall be clearly marked. The inspection or quality assurance system to be applied shall be defined at the time of enquiry or order (see annex Ah) and shall be based on one of the following: a) the manufacturer shall take responsibility for quality assura

33、nce based on a procedure in conformity with BS 5750 : Part 1 : 1987, BS 5750 : Part 2 : 1987 and BS 5750 : Part 3 : 1987; NDlX 1. See the foreword. b) alternatively, the manufacturer shall advise the purchaser of the date of forging, sample selection and mechanical testing of the test pieces to enab

34、le the purchaser to witness these procedures, and of the availability of the finished product for inspection. There shall be access during working hours for the purchaser to observe the manufacturing process and to inspect the finished product. NOTE 2. Any batches which do not conform should be sort

35、ed before submission for the purchasers inspection. 5 i 9 Marking Identification markings on fishbolt heads shall be either embossed or indented. High strength bolts shall carry the letter V and all bolts shall cany the trade (identification) mark of the manufacturer and any additional marking speci

36、fied (see annex Af). 10 Protective coating Cnlecs otherwise specified at the time of ordering (see annex Ag) the finished fishbolts and nuts shall be protected before despatch from atmospheric corrosion, under normal storage conditions, by a protective medium. IVhen plastics or other non-ferrous mat

37、erials form part of a locking device care shall be taken to ensure that their properties are not adversely affected by the protective medium. 6 P BSI BS*bY Ol lb2Ybb9 0423672 867 D B Depth of head Max. Min. 0.915 0.875 0.915 0.875 BS 64 : 1992 BI Depth of head Max. Min. 0.665 0.625 0.665 0.625 Cross

38、 section X-X Number of British Standard seetion of LI pg; All dimensions are in inches. Nominal size n rad 80, 85R, 90R, 95R, 100R Figure 1. Cup/pear and padpear fishbolts and nuts for fishplates with pear shaped holes (see table 5) 0.978 0.928 hble 5. Dimensins of eup/pear and padpear fishbolts and

39、 nuts for fishplates with pear shaped hc l I rail :of ikngth;” Max. Min. Max. 1.780 1.750 0.915 0.875 NOTE. See figure 1. - . BSI BS*b4 O1 W 1624669 0423673 7T3 m ) 0.665 0.625 1.238 1.188 i 0.665 0.625 1.300 1.250 holes 0.063 0.063 m. 0.031 0.031 G Thread length 2 2 F Length of bolt BSF 4 BSW 4; BS

40、F 4 i BSW 4 i Dimensions in inches Max. pin. pax. p. BSI BS*b4 O1 Lb24bb 0423674 b3T = BS 64 : 1992 Lgble 6. Dimensions of square headed fishbolts and nuts for flat bottom rails with round holes (umber of British itandard section of .ail 50 O 50 A 30 R 70 A 75 A 75 R 80 A BO R 80 R Angled 80 O 90 A

41、90 R 95 A 95 R 95 R BH 95 R BH Skirted 95 N 100 A 1R 110 A 113 A NOTE. See fimire 2. g00minal iize J Diameter of unthreaded shank Max. 0.790 O. 790 0.790 O. 853 0.915 0.915 0.915 0.915 0.915 0.915 0.978 0.978 1.040 1 .O40 0.978 0.978 1.040 1.040 1.040 1.040 1.040 Min. . 740 O. 740 O. 740 O. 803 0.86

42、5 0.865 0.865 0.865 0.865 O. 865 0.928 0.928 0.990 0.990 0.928 0.928 0.990 0.990 o. 990 o. 990 0.990 3 Width across ats of bolt iead, nut and liameter of nut :ollar Max. L. 300 1.300 1. 300 1.390 1.480 1.480 1.480 1.480 1.480 1.480 1.580 1.580 1.670 1 A70 1.580 1.580 1.670 1.670 1.670 1.670 1.670 Mi

43、n. 1.280 1.280 1.280 1.370 1.460 1.460 1.460 1.460 1.460 1.460 1.560 1.560 1.650 1.650 1.560 1.560 1.650 1.650 1.650 1.650 1 .GO 0 hickness of head MU. 0.686 O. 686 0.686 O. 758 O. 806 0.806 O. 806 0.806 0.806 0.806 0.868 0.868 0.915 0.915 O. 868 0.868 0.915 0.915 0.915 0.915 0.915 Min. 0.656 0.656

44、0.656 0.718 0.766 0.766 0.766 0.766 0.766 O. 766 0.828 0.828 0.875 0.875 0.828 0.828 0.875 O. 875 0.875 0.875 0.875 K Length of bolt Radius under head LIax. 0.047 0. 047 0.047 0.063 O. 063 0.063 0.063 O. 063 O. 063 0.063 O. 063 O. 063 O. 063 O. 063 0.063 0.063 O. 063 O. 063 0.063 O. 063 o. 06:3 Hin.

45、 1.031 3.031 1.031 D. 03 1 3.031 3.031 9.031 3.03 1 3.031 D.031 0.03 I 0.0:3: 0.03 i 0.03 0.03 o. 03 O. 0:3 o. o3 o. 0:3 f I. 0:3 o. 0:3 der VIin. 3.031 3.031 3.031 0.031 0.031 0.03 1 0.031 0.031 0.031 0. 0:3 1 0.031 0.031 0.031 0.031 o. ( i:3 1 O. 0:3 1 O. O3 1 0.031 o. 0:3 1 (1. ():3 1 ). :3 1 Dim

46、ensions in inches 4 herall hickness of nut ilax. 1.041 1.041 1.041 1.123 1.216 1.216 1.216 1.216 1.216 1.21(i 1.279 1.27) 1.373 1.373 1.23 1 .279 1.3713 1.33 1.33 1.37:3 1 .34:3 - Min. 1.000 1.000 1.000 1.063 1.156 1.136 1.156 1.156 1.156 1.156 1.219 1.219 1.313 1.313 1.219 1.219 1.31:3 1.313 1.31:3

47、 1.513 1 . :3 1 :3 Y mickness of Rut coiiar Max. 0.270 0.270 0.270 0.270 0.301 0.301 0.301 0.301 0.301 0.301 0.301 0.301 0. 333 0.333 0.301 0.30 1 0.3333 o. 333 o. 333 o. 333 o. 333 Hin. I. 250 1.250 3.250 3.250 D.281 0.281 0.281 0.281 0.281 0.28f 0.281 0.281 0.313 0.313 0.281 0.281 0.313 0.313 0.31

48、3 0.313 0.313 I - I) A Effective diameter BSI BS*b4 O1 m 1624669 0423b7b 402 m BS 64 : 1992 Minor diameter Annexes Annex A (informative) Information to be supplied by the purchaser The following information should be stated by the purchaser on the enquiry and order: a) the number and date of this Br

49、itish Standard, i.e. BS 64 : 1992; b) the strength grade required, normal or high strength (see clause 6); c) the rail and fishplate sections the fishbolt is to be used with; d) the design of the fishbolt and nut (Design A, B or C) (see clause 7); e) the type of thread required (see clause 7); f) the type of marking to be used on the bolt heads (see clause 9); g) the type of protective medium if one is to be used or any special requirements for corrosion protection (see clause 10); h) the type of quality assurance system required (see clause 8). NCY