BRITISH STANDARD AEROSPACE SERIES BS 4A 169 2002 Amendment No 1 Specification for aluminium alloy bolts (Unified hexagons and Unified threads) for aircraft ICS 49 030 20 BS 4A 169 2002 This British St[.]
BRITISH STANDARD AEROSPACE SERIES Specification for aluminium alloy bolts (Unified hexagons and Unified threads) for aircraft ICS 49 030 20 BS 4A 169:2002 Amendment No BS 4A 169:2002 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee ACE/1 2, Aerospace fasteners and fastening, upon which the following bodies were represented: Civil Aviation Authority (Airworthiness Division) Confederation of British Forgers Institute of Petroleum Ministry of Defence Society of British Aerospace Companies Ltd This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 28 January 2002 © BSI 2006 The following BSI references relate to the work on this standard: Committee reference ACE/12 Draft for comment 00/704897 DC ISBN 580 33292 Amendments issued since publication Amd No Date Comments 6376 June 2006 Corrections to Table BS 4A 169:2002 Contents Page Committees responsible Inside front cover Foreword ii Scope Normative references General requirements Materials and manufacture Dimensions and tolerances Screw threads Anti-corrosion treatment Hardness values Identification and marking 10 Quality assurance procedure Bibliography 15 Table — Dimensions of bolts Table — Bearing length L, clamping length M and overall length E Figure — Dimensions of bolts (see Table 1) Figure — Bearing length (see Table 2) © BSI 200 L, clamping length M and overall length E i BS 4A 169:2002 Foreword This British Standard has been prepared by Technical Committee ACE/1 It is a revision of BS 3A 169: 962 which is superseded and withdrawn This revision of BS 3A 69 refers to the relevant requirements in BS A 100 It incorporates amendment of BS 3A 169 and updates and revises material specifications NOTE Fasteners manufactured to previous editions of this specification may continue to be supplied until stocks are exhausted 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 does not of itself confer immunity from legal obligations Summary of pages This document comprises a front cover, and inside front cover, pages i and ii, pages to and a back cover The BSI copyright notice displayed in this document indicates when the document was last issued ii © BSI 00 BS 4A 169:2002 Scope This British Standard specifies materials and manufacture, dimensions, protective treatment and quality assurance requirements for aluminium-alloy hexagon-head bolts with unified threads NOTE The latest edition of an Aerospace Series standard is indicated by a prefix number Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this British Standard For dated references, subsequent amendments to, or revisions of, any of these publications not apply For undated references, the latest edition of the publication referred to applies BS 3A 100, Specification for general requirements for bolts and free-running nuts of tensile strength not exceeding 249 MPa BS L 68, Specification for bars and extruded sections of aluminium-copper-magnesium-silicon-manganese alloy (solution treated and artificially aged) (not exceeding 200 mm diameter or minor sectional dimension) (Cu 4.4, Mg 0.5, Si 0.7, Mn 0.8) General requirements Bolts shall conform to BS A 00 Materials and manufacture The bolts shall be machined from bars that conform to BS L 68 Dimensions and tolerances 5.1 All finished bolts shall conform to the dimensions and tolerances specified in Table and Table 5.2 The clamping length of the bolt shall conform to the dimensions and tolerances specified in Table 2, and shall be such that when a standard nut, without countersink or ring gauge is, screwed on as far as possible by hand, its leading face is within a distance from the underside of the bolt head The run-out of the M thread shall not exceed twice the thread pitch 5.3 The nominal length of the bolt shall be the minimum bearing length L, which is determined by the minimum clamping length, M, less two thread pitches (see Table 2) L quoted in Table are in inch increments but where a 05 length increment is required this should be by agreement between manufacturer and user and should be identified as follows: ? B, indicating a 6-32 UNC bolt of bearing length L 85 inches M and E need to be adj usted accordingly NOTE The bearing lengths ? Screw threads The bolts shall have unified screw threads, of the form and fit specified in the latest edition of BS A 00 Anti-corrosion treatment All finished bolts shall be anodized and dyed green NOTE Because of the use of the chromic acid process for anodizing, the bolts will not necessarily be uniformly coloured after staining Hardness values NOTE Hardness values are not currently applicable, though they may become applicable in the near future Identification and marking The bolts shall be marked in accordance with BS 3A 00: 991 , clause 10 Quality assurance procedure The bolts shall conform to the quality requirements specified in BS A 00, as appropriate to the method of manufacture © BSI 200 BS 4A 169:2002 D B D M ax ru n o u t o f L* R th re ad = x p i tch ( b e ari n g le n g th ) F 5º R D i a o f wash e r ( fo r re f rad face = B m i n o n ly) A C rad 45 º 30º 0.01 i n G M* ( clam p i n g le n g th ) 0º E* ( o ve rall le n g th ) a) b) © BSI 200 Figure — Dimensions of bolts (see Table ) - 0.01 in © BSI 20 06 Table — Dimensions of bolts Nominal size Decimal 2? Diameter of Min Width across flats Width equivalent plain portion of pitch length of across of nominal screwed shank corners portion size of shank A in ? ?? ? ?? ? ?? ??? F? max in in Ref only in in B max in 10 11 12 13 Thickness of head Radius under bolt heat C in max D max 14 15 Depth of chamfer R max G in max in in in in 1 2-40 UNC (4) 11 20 1 085 050 300 88 83 21 070 060 01 005 020 in 01 in 38-32 UNC (6) 1380 375 345 063 277 250 245 289 085 075 01 005 030 020 64-32 UNC (8) 1640 635 605 063 327 31 307 361 00 090 020 01 0 030 020 90-32 UNF (1 0) 1900 895 865 063 377 344 339 397 15 05 020 01 0 030 020 250-28 UNF (E) 2500 2495 2465 071 459 438 431 505 50 40 030 01 040 030 31 25-24 UNF (G) 31 25 31 20 3090 083 497 500 493 577 80 70 030 01 040 030 375-24 UNF (J) 3750 3745 3715 083 597 562 554 650 220 210 030 01 040 030 4375-20 UNF (L) 4375 4370 4335 00 670 688 679 794 270 260 030 01 050 040 500-20 UNF (N) 5000 4995 4960 00 770 750 741 866 300 290 030 01 050 040 5625-1 UNF (P) 5625 5620 5585 1 859 875 866 01 0 350 340 030 01 050 040 625-1 UNF (Q) 6250 6245 6205 1 949 938 929 083 390 380 030 01 060 050 * For bearing length L, clampling length M and overall length E see Table ? This dimension is an absolute minimum associated with maximum length ?? M and minimum length E It is not intended for use for manufacturing or inspection purposes ? BS 4A 169:2002 b) E Figure — Bearing length L, clamping length M and overall length E (see Table 2) a) M M E L L BS 4A 169:2002 © BSI 200 © BSI 200 Table — Bearing length L, clamping length M and overall length E No 4-40 UNC Part No L* in M +0 – 0.03 in No 6-32 UNC E Part No L* + 0.04 –0 in ?A 05 30 45 1A 1 80 50 2A 280 3A 4A in M +0 – 03 in No 8-32 UNC E Part No L* + 0.04 –0 in ?B 05 43 45 1B 1 93 50 60 2B 293 60 380 70 3B 393 480 80 4B 5A 580 90 5B 6A 680 00 7A 780 1.10 8A 880 9A 0A ?C in M +0 – 0.03 in No 10-32 UNF E Part No L* + 0.04 –0 in 05 43 50 1C 193 55 2C 293 65 70 3C 393 493 80 4C 593 90 5C 6B 693 00 7B 793 1.10 20 8B 893 980 30 9B 080 40 10B 1.0 ?D in M +0 –0.03 in E + 0.04 –0 in 05 43 55 1D 1 93 60 2D 293 70 75 3D 393 80 493 85 4D 493 90 593 95 5D 593 00 6C 693 05 6D 693 1.10 7C 793 1.15 7D 793 20 20 8C 893 25 8D 893 30 993 30 9C 993 35 9D 993 40 093 40 0C 1.0 093 45 0D 1.0 093 50 11A 1 1 80 50 11 B 1.1 93 50 11C 1.1 93 55 1D 1.1 93 60 2A 280 60 12B 1.2 293 60 2C 1.2 293 65 2D 1.2 293 70 3A 380 70 13B 1.3 393 70 3C 1.3 393 75 3D 1.3 393 80 4A 480 80 14B 1.4 493 80 4C 1.4 493 85 4D 1.4 493 90 5A 580 90 15B 1.5 593 90 5C 1.5 593 95 5D 1.5 593 00 6A 680 00 16B 1.6 693 00 6C 1.6 693 05 6D 1.6 693 10 7A 780 17B 1.7 793 1 7C 1.7 793 7D 1.7 793 20 8A 880 20 18B 1.8 893 20 8C 1.8 893 25 8D 1.8 893 30 9A 980 30 19B 1.9 993 30 9C 1.9 993 35 9D 1.9 993 40 20A 2 080 40 20B 2 093 40 20C 2 093 45 20D 2 093 50 * See 5.3 BS 4A 169:2002 No 4-40 UNC Part No L* in 21 A No 6-32 UNC M +0 – 0.03 in 80 E Part No L* + 0.04 –0 in 50 in 21 B M +0 – 03 in 93 No 8-32 UNC E Part No L* + 0.04 –0 in 50 in 21 C M +0 – 0.03 in 93 No 10-32 UNF E Part No L* + 0.04 –0 in 55 in 21D M +0 –0.03 in 93 E + 0.04 –0 in 60 22A 2 280 60 22B 2 293 60 22C 2 293 65 22D 2 293 70 23A 380 70 23B 393 70 23C 393 75 23D 393 80 24A 480 80 24B 493 80 24C 493 85 24D 493 90 25A 580 90 25B 593 90 25C 593 95 25D 593 00 26A 680 00 26B 693 00 26C 693 05 26D 693 27A 780 27B 793 27C 793 27D 793 20 28B 893 20 28C 893 25 28D 893 30 * See 5.3 BS 4A 169:2002 Table — Bearing length L, clamping length M and overall length (continued) © BSI 200 BS 4A 169:2002 Table — Bearing length L, clamping length M and overall length E (continued) No 6-32 UNC Part No L* in M +0 – 0.03 in No 8-32 UNC E Part No L* + 0.04 –0 in in M +0 – 0.03 in No 10-32 UNC E Part No L* + 0.04 –0 in in M +0 – 03 in E + 0.04 –0 in 29B 993 30 29C 993 35 29D 993 40 30B 3 093 40 30C 3 093 45 30D 3 093 50 31B 3 93 50 31C 3 93 55 31 D 3 193 60 32B 3 293 60 32C 3 293 65 32D 3 293 70 33B 3 393 70 33C 3 393 75 33D 3 393 80 34B 493 80 34C 493 85 34D 493 90 35B 593 90 35C 593 95 35D 593 00 36B 693 00 36C 693 05 36D 693 37B 793 37C 793 37D 793 20 38B 893 20 38C 893 25 38D 893 30 39B 993 30 39C 993 35 39D 993 40 40B 4 093 40 40C 4 093 45 40D 4 093 50 41B 4 93 50 41C 4 93 55 41 D 4 193 60 42B 4 293 60 42C 4 293 65 42D 4 293 70 43B 4 393 70 43C 4 393 75 43D 4 393 80 44B 4 493 80 44C 4 493 85 44D 4 493 90 45B 593 90 45C 593 95 45D 593 00 46B 693 00 46C 693 05 46D 693 47B 793 47C 793 5 47D 793 20 48B 893 20 48C 893 25 48D 893 30 49B 993 30 49C 993 35 49D 993 40 50B 5 093 40 50C 5 093 45 50D 5 093 50 51B 5 93 50 51C 5 93 55 51 D 5 193 60 52B 5 293 60 52C 5 293 65 52D 5 293 70 53B 5 393 70 53C 5 393 75 53D 5 393 80 * See 54D 5 493 90 55D 5 593 00 56D 693 57D 793 20 58D 893 30 59D 993 40 60D 6 093 50 5.3 © BSI 200 BS 4A 169:2002 Part No Table — Bearing length L, clamping length M and overall length E (continued) ? in UNF ? in UNF ? in UNF L* in ?E M +0 – 0.03 in E Part No + 04 –0 L* in in M +0 – 0.03 in E Part No L* + 0.04 –0 in in M +0 – 0.03 in E + 0.04 –0 in 05 51 65 ½G 05 63 70 1E 201 70 1G 21 75 1J 21 2E 301 80 2G 31 85 2J 31 95 3E 401 90 3G 41 95 3J 41 05 4E 501 00 4G 51 05 4J 51 1.15 5E 601 1.10 5G 61 1.15 5J 61 25 6E 701 20 6G 71 25 6J 71 35 7E 801 30 7G 81 35 7J 81 45 8E 901 40 8G 91 45 8J 91 55 9E 001 50 9G 01 55 9J 01 65 0E 1.0 1 01 60 0G 1.0 1.113 65 0J 1.0 1.113 75 85 11E 1.1 201 70 1G 1.1 21 75 11J 1.1 21 85 2E 1.2 301 80 2G 1.2 31 85 2J 1.2 31 95 3E 1.3 401 90 3G 1.3 41 95 3J 1.3 41 05 4E 1.4 501 00 4G 1.4 51 05 4J 1.4 51 5E 1.5 601 1 5G 1.5 61 5J 1.5 61 25 6E 1.6 701 20 6G 1.6 71 25 6J 1.6 71 35 7E 1.7 801 30 7G 1.7 81 35 7J 1.7 81 45 8E 1.8 901 40 8G 1.8 91 45 8J 1.8 91 55 9E 1.9 001 50 9G 1.9 01 55 9J 1.9 01 65 20E 2 01 60 20G 2 1 65 20J 2 1 75 21 E 2 201 70 21G 2 21 75 21 J 2 21 85 22E 2 301 80 22G 2 31 85 22J 2 31 95 23E 401 90 23G 41 95 23J 41 3 05 24E 501 00 24G 51 3 05 24J 51 3 25E 601 25G 61 3 25J 61 3 25 26E 701 20 26G 71 3 25 26J 71 3 35 27E 801 30 27G 81 3 35 27J 81 3 45 28E 901 40 28G 91 3 45 28J 91 3 55 29E 001 50 29G 01 3 55 29J 01 3 65 30E 3 01 60 30G 3 1 3 65 30J 3 1 3 75 31 E 3 201 70 31G 3 21 3 75 31 J 3 21 3 85 32E 3 301 80 32G 3 31 3 85 32J 3 31 3 95 33E 3 401 90 33G 3 41 3 95 33J 3 41 05 34E 501 00 34G 51 05 34J 51 35E 601 35G 61 35J 61 25 * See 5.3 © BSI 200 BS 4A 169:2002 Part No Table — Bearing length L, clamping length M and overall length E (continued) ? in UNF ? in UNF ? in UNF L* in M +0 – 0.03 in E Part No + 0.04 –0 L* in in M +0 – 0.03 in E Part No + 04 –0 L* in in M +0 – 03 in E + 0.04 –0 in 36E 701 20 36G 71 25 36J 71 35 37E 801 30 37G 81 35 37J 81 45 38E 901 40 38G 91 45 38J 91 55 39E 001 50 39G 01 55 39J 01 65 40E 4 01 60 40G 4 1 65 40J 4 1 75 41 E 4 201 70 41 G 4 21 75 41 J 4 21 85 42E 4 301 80 42G 4 31 85 42J 4 31 95 43E 4 401 90 43G 4 41 95 43J 4 41 05 44E 4 501 00 44G 4 51 00 44J 4 51 5 45E 601 45G 61 5 45J 61 25 46E 701 20 46G 71 25 46J 71 35 47E 801 30 47G 81 35 47J 81 45 48E 901 40 48G 91 45 48J 91 55 49E 001 50 49G 01 55 49J 01 65 50E 5 01 60 50G 5 1 65 50J 5 1 75 51 E 5 201 70 51 G 5 21 75 51 J 5 21 85 52E 5 301 80 52G 5 31 85 52J 5 31 95 53E 5 401 90 53G 5 41 95 53J 5 41 05 54E 5 501 00 54G 5 51 05 54J 5 51 55E 5 601 55G 5 61 55J 5 61 25 56E 701 20 56G 71 25 56J 71 35 57E 801 30 57G 81 35 57J 81 45 58E 901 40 58G 91 45 58J 91 55 59E 001 50 59G 01 55 59J 01 65 60E 6 01 60 60G 6 1 65 60J 6 1 75 61 G 6 21 75 61 J 6 21 85 62G 6 31 85 62J 6 31 95 63G 6 41 95 63J 6 41 05 64G 6 51 05 64J 6 51 65G 6 61 65J 6 61 25 66G 6 71 25 66J 6 71 35 67G 81 35 67J 81 45 68G 91 45 68J 91 55 69G 01 55 69J 01 65 70G 7 1 65 70J 7 1 75 * See 5.3 © BSI 20 06 BS 4A 169:2002 Table — Bearing length L, clamping length M and overall length E (continued) ? in UNF Part No L* in M +0 – 03 in ? in UNF ? in UNF ?? E Part No L* + 0.04 –0 in in M +0 –0.03 in E Part No L* + 0.04 –0 in in M +0 – 0.03 in E + 04 –0 in 1L 230 95 1N 230 05 1P 241 1 2L 330 05 2N 330 1.15 2P 341 25 3L 430 1 3N 430 25 3P 441 35 4L 530 25 4N 530 35 4P 541 45 5L 630 35 5N 630 45 5P 641 55 6L 730 45 6N 730 55 6P 741 65 7L 830 55 7N 830 65 7P 841 75 8L 930 65 8N 930 75 8P 941 85 9L 030 75 9N 030 85 9P 041 95 0L 1.0 30 85 0N 1 30 95 0P 1.0 41 05 * See 10 5.3 © BSI 200 BS 4A 169:2002 Table — Bearing length L, clamping length M and overall length E (continued) Part No ? in UNF L* in 11L 1.1 M +0 – 0.03 in 230 E Part No + 0.04 –0 ? in UNF L* in 95 in 11N 1.1 M +0 – 0.03 in 230 E Part No + 0.04 –0 ? in UNF L* in 05 in 11P 1 M +0 – 0.03 in 241 E + 0.04 –0 in 2L 1.2 330 05 2N 1.2 330 2P 341 25 3L 1.3 430 3N 1.3 430 25 3P 441 35 4L 1.4 530 25 4N 1.4 530 35 4P 541 45 5L 1.5 630 35 5N 1.5 630 45 5P 641 55 6L 1.6 730 45 6N 1.6 730 55 6P 741 65 7L 1.7 830 55 7N 1.7 830 65 7P 841 75 8L 1.8 930 65 8N 1.8 930 75 8P 941 85 9L 1.9 030 75 9N 1.9 030 85 9P 041 95 20L 2 30 85 20N 2 30 95 20P 2 141 05 21 L 2 230 95 21 N 2 230 05 21 P 2 241 22L 2 330 05 22N 2 330 22P 2 341 25 23L 430 23N 430 25 23P 441 35 24L 530 25 24N 530 35 24P 541 45 25L 630 35 25N 630 45 25P 641 55 26L 730 45 26N 730 55 26P 741 65 27L 830 55 27N 830 65 27P 841 75 28L 930 65 28N 930 75 28P 941 85 29L 030 75 29N 030 85 29P 041 95 30L 3 30 85 30N 3 30 95 30P 3 141 05 31 L 3 230 95 31 N 3 230 05 31 P 3 241 32L 3 330 05 32N 3 330 32P 3 341 25 33L 3 430 33N 3 430 25 33P 3 441 35 34L 530 25 34N 530 35 34P 541 45 35L 630 35 35N 630 45 35P 641 55 36L 730 45 36N 730 55 36P 741 65 37L 830 55 37N 830 65 37P 841 75 38L 930 65 38N 930 75 38P 941 85 39L 030 75 39N 030 85 39P 041 95 40L 4 30 85 40N 4 30 95 40P 4 141 05 41 L 4 230 95 41 N 4 230 05 41 P 4 241 5 42L 4 330 05 42N 4 330 5 42P 4 341 25 43L 4 430 5 43N 4 430 25 43P 4 441 35 44L 4 530 25 44N 4 530 35 44P 4 541 45 45L 630 35 45N 630 45 45P 641 55 * See 5.3 © BSI 200 11 BS 4A 169:2002 Table — Bearing length L, clamping length M and overall length E (continued) ? in UNF Part No L* in M +0 – 0.03 in ? in UNF ? in UNF E Part No L* + 04 –0 in in M +0 – 03 in E Part No L* + 0.04 –0 in in M +0 –0.03 in E + 04 –0 in 46L 730 45 46N 730 55 46P 741 65 47L 830 55 47N 830 65 47P 841 75 48L 930 65 48N 930 75 48P 941 85 49L 030 75 49N 030 85 49P 041 95 50L 5 30 85 50N 5 30 95 50P 5 41 05 51 L 5 230 95 51 N 5 230 05 51 P 5 241 52L 5 330 05 52N 5 330 52P 5 341 25 53L 5 430 53N 5 430 25 53P 5 441 35 54L 5 530 25 54N 5 530 35 54P 5 541 45 55L 5 630 35 55N 5 630 45 55P 5 641 55 56L 730 45 56N 730 55 56P 741 65 57L 830 55 57N 830 65 58L 930 65 58N 930 75 59L 030 75 59N 030 85 60L 6 30 85 60N 6 30 95 61 L 6 230 95 61 N 6 230 05 62L 6 330 05 62N 6 330 63L 6 430 63N 6 430 25 64L 6 530 25 64N 6 530 35 65L 6 630 35 65N 6 630 45 66L 6 730 45 66N 6 730 55 67L 830 55 67N 830 65 68L 930 65 68N 930 75 69L 030 75 69N 030 85 70L 7 30 85 70N 7 30 95 * See 12 5.3 © BSI 200 BS 4A 169:2002 Table — Bearing length L, clamping length M and overall length E (continued) ? in UNF Part No L* in M +0 – 0.03 in E + 0.04 –0 in 1Q 241 25 2Q 341 35 3Q 441 45 4Q 541 55 5Q 641 65 6Q 741 75 7Q 841 85 8Q 941 95 9Q 041 05 10Q 1.0 41 11 Q 1.1 241 25 12Q 1.2 341 35 13Q 1.3 441 45 14Q 1.4 541 55 15Q 1.5 641 65 16Q 1.6 741 75 17Q 1.7 841 85 18Q 1.8 941 95 19Q 1.9 041 05 20Q 2 41 21 Q 2 241 25 22Q 2 341 35 23Q 441 45 24Q 541 55 25Q 641 65 * See 5.3 © BSI 200 13 BS 4A 169:2002 Table — Bearing length L, clamping length M and overall length E (continued) Part No ? in UNF L* in M +0 – 0.03 in E + 04 –0 in 26Q 741 75 27Q 841 85 28Q 941 95 29Q 041 05 30Q 3 41 31 Q 3 241 25 32Q 3 341 35 33Q 3 441 45 34Q 541 55 35Q 641 65 36Q 741 75 37Q 841 85 38Q 941 95 39Q 041 05 40Q 4 41 5 41 Q 4 241 25 42Q 4 341 35 43Q 4 441 45 44Q 4 541 55 45Q 641 65 46Q 741 75 47Q 841 85 48Q 941 95 49Q 041 05 50Q 5 41 51 Q 5 241 25 52Q 5 341 35 53Q 5 441 45 54Q 5 541 55 55Q 5 641 65 56Q 741 75 57Q 751 85 58Q 761 95 59Q 771 05 60Q 781 * See 14 5.3 © BSI 200 BS 4A 169:2002 Bibliography Standards publication BS 3A 69 © BSI 200 , Specification for aluminium alloy bolts (Unified hexagons and unified threads for aircraft) 15 BS 4A 169:2002 BSI — British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: +44 (0)20 8996 9000 Fax: +44 (0)20 8996 7400 BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001 Email: orders@bsi-global com Standards are also available from the BSI website at http: //www bsi-global com In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre Tel: +44 (0)20 8996 71 1 Fax: +44 (0)20 8996 7048 Email: info@bsi-global com Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: membership@bsi-global com Information regarding online access to British Standards via British Standards Online can be found at http: //www bsi-global com/bsonline Further information about BSI is available on the BSI website at http: //www bsi-global com Copyright Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the international standardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations If these BSI 389 Chiswick High Road London W4 4AL details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained Details and advice can be obtained from the Copyright & Licensing Manager Tel: +44 (0)20 8996 7070 Fax: +44 (0)20 8996 7553 Email: copyright@bsi-global com