BRITISH STANDARD AUTOMOBILE SERIES BS AU 1c 1989 ISO 337 1981 (Superseding BS AU 1b 1977) Specification for Dimensions of “50” fifth wheel king pin for semi trailers [ISO title Road vehicles — 50 semi[.]
Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 05: 09 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BRITISH STANDARD AUTOMOBILE SERIES BS AU c:1 989 ISO 337:1 981 (Superseding BS AU 1b:1977) Specification for Dimensions of “50” fifth wheel king pin for semi-trailers [ISO title: Road vehicles — semi-trailer fifth wheel coupling pin — Basic and mounting/interchangeability dimensions] UDC 629 1 01 7: (083 3) Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 05: 09 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 1c:1989 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Automobile Standards Committee (AUE/- ) to Technical Committee AUE/1 upon which the following bodies were represented: British Railways Board Department of Transport (Highways) Freight Transport Association Health and Safety Executive Institute of Road Transport Engineers London Regional Transport Ministry of Defence National Bus Company Road Haulage Association Society of Motor Manufacturers and Traders This British Standard, having been prepared under the direction of the Automobile Standards Committee, was published under the authority of the Board of BSI and comes into effect on 31 March 989 © BSI 02- 2000 The following BSI references relate to the work on this standard: Committee reference AUE/1 Draft for comment 76/73553 DC ISBN 580 16872 Amendments issued since publication Amd No Date of issue Comments Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 05: 09 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 1c:1989 Contents Page Committees responsib le National foreword ii Scope and field of application Reference Basic functional dimensions of pin D imensional characteristics for mounting and interchangeability Figure 1 Figure 2 Figure Pub lications referred to © BSI 02 - 000 Inside front cover Inside back cover i Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 05: 09 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU c:1 989 National foreword This revision of BS AU has been prepared under the direction of the Automobile Standards Committee and is identical with ISO 337: 981 “Road vehicles — 50 semi- trailer fifth wheel coupling pin — Basic and mounting/interchangeability dimensions ” published by the International Organization for Standardization (ISO) This revision supersedes BS AU b: 977 which is withdrawn 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 drawn especially to the following The comma has been used as a decimal marker In British Standards it is current practice to use a full point on the baseline as the decimal marker Wherever the words “International Standard” appear, referring to this standard, they should be read as “British Standard” Cross-reference The Technical Committee has reviewed the provisions of ISO 4086, to which reference is made in the text, and has decided that they are acceptable for use in conj unction with this standard 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, an inside front cover, pages i and ii, pages and 2, an inside back cover and a back cover This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover ii © BSI 02- 2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 05: 09 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 1c:1989 Scope and field of application Ì 50, mm (2 in)] This International Standard specifies the dimensions of the 50 [ fifth wheel coupling pin which is used for coupling semi- trailers to prime movers, taking into account the limitations of weight generally laid down by official requirements NOTE If, for extra heavy- duty vehicles, this coupling pin is not sufficient, an 90 [ Ì 89 mm (3 in) ] fifth wheel coupling pin according to ISO 4086 shall be used In addition, this International Standard specifies the dimensional characteristics necessary for mounting and interchangeability Reference ISO 4086, Road vehicles — 90 semi- trailer fifth wheel coupling pin — Basic and mounting/interchangeability dimensions Basic functional dimensions of pin Figure © BSI 02- 2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 05: 09 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 1c:1989 Dimensional characteristics for mounting and interchangeability *The dimensions 09 –0, **The dimensions 25, (Type A) and 39 –0, ± 0, (Type A) and 60 (Type B) correspond to the pin dimensions –0, (Type B) are to be checked before mounting a new part ***The dimension 84 –1 , (Types A and B) is a control dimension for built- in new pin (i e to be checked after mounting) Figure © BSI 02- 2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 05: 09 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI Publications referred to See national foreword © BSI 02 - 000 BS AU 1c:1989 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 05: 09 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 1c:1989 ISO 337:1981 BSI — British Standards Institution BS I is the indep endent national b ody res p ons ib le for p rep aring Britis h S tandards It p res ents the UK view on s tandards in E urop e and at the international level It is incorp orated b y Royal C harter Revisions Britis h S tandards are up dated b y amendment or revis ion Us ers of Britis h S tandards should make s ure that they p oss es s the latest amendments or editions It is the constant aim of BS I to imp rove the quality of our p roducts and services We would b e grateful if anyone finding an inaccuracy or amb iguity while us ing this Britis h S tandard would inform the S ecretary of the technical committee res p ons ib le, the identity of which can b e found on the inside front cover Tel: 02 89 96 90 00 Fax: 02 89 96 40 BS I offers memb ers an individual up dating s ervice called PLUS which ens ures that s ub s crib ers automatically receive the lates t editions of s tandards Buying standards O rders for all BS I, international and foreign s tandards p ub lications s hould b e addres s ed to C us tomer S ervices Tel: 899 00 Fax: 899 7001 In res p ons e to orders for international standards , it is BS I p olicy to sup p ly the BS I imp lementation of thos e that have b een p ub lis hed as Britis h S tandards, unless otherwis e requested Information on standards BS I p rovides a wide range of information on national, E urop ean and international standards through its Lib rary and its Technical H elp to E xp orters S ervice Various BS I electronic information s ervices are also availab le which give details on all its p roducts and s ervices C ontact the Information C entre Tel: 02 89 96 71 1 Fax: 02 89 96 048 S ub s crib ing memb ers of BS I are kep t up to date with s tandards develop ments and receive sub s tantial discounts on the p urchase p rice of s tandards For details of thes e and other b enefits contact Memb ership Adminis tration Tel: 02 89 96 70 02 Fax: 02 89 96 00 Copyright C op yright s ub s is ts in all BS I p ub lications BS I als o holds the cop yright, in the UK, of the p ub lications of the international s tandardization b odies E xcep t as p ermitted under the C op yright, D es igns and Patents Act 988 no extract may b e rep roduced, s tored in a retrieval s ystem or transmitted in any form or b y any means – electronic, p hotocop ying, recording or otherwis e – without p rior written p ermis s ion from BS I This does not p reclude the free us e, in the cours e of imp lementing the standard, of necess ary details such as s ymb ols, and size, typ e or grade designations If thes e details are to b e used for any other p urp os e than imp lementation then the p rior written p ermiss ion of BS I must b e ob tained If p ermis sion is granted, the terms may include royalty p ayments or a licensing agreement D etails and advice can b e ob tained from the C op yright Manager BS I 89 C his wick H igh Road London W4 4AL Tel: 02 89 96 70