BRITISH STANDARD AUTOMOBILE SERIES BS AU 2a 1970 Specification for Dimensions of 3; – 4; in diameter fifth wheel king pin for use with extra heavy duty semi trailers UDC 629 114 2 013 6 L ic e n s e d[.]
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 01 : 52: 34 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BRITISH STANDARD AUTOMOBILE SERIES Specification for Dimensions of ; – ; in diameter fifth wheel king pin for use with extra heavy duty semi-trailers UD C 62 1 BS AU 2a:1 970 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 01 : 52: 34 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU a: 97 Fore word This British Standard, prepared under the authority of the Automobile Industry Standards Committee of BSI, was first published in 963 This revision provides additional information regarding the dimensions, including metric conversions This fifth wheel king pin is dimensionally interchangeable with that specified in Standard No SAE J848a of the Society of Automotive Engineers of the United States of America 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 C o mp liance with a British S tand ard doe s not o f itse lf co nfe r immunity fro m le gal ob ligations S ummary o f p age s This document comprises a front cover, an inside front cover, pages i and ii, page and a back cover This British Standard, having been approved by the This standard has been updated (see copyright date) and may have had Mechanical Engineering amendments incorporated This will be indicated in the amendment table on Industry Standards the inside front cover Committee, was published under the authority of the Executive Board of the Institution on 28 August 970 © BSI 02- 2000 The following BSI reference relate to the work on this standard: Committee reference AUE/- IS B N 80 3 Ame ndme nts issue d since p ub lication Amd No Date 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 01 : 52: 34 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 2a:1970 Contents Foreword Figure — © BSI 02 - 000 Inside front cover Page Scope D imensions and tolerances " – " in diameter fifth wheel king pin 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 01 : 52: 34 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI ii blank 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 01 : 52: 34 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU a: 97 S cop e D imensions and tole rance s This British Standard specifies dimensions for D ime nsio ns a king pin shall be as shown in Figure " – 4" in diameter king pin for fifth wheel attachment to semi- trailers for extra heavy duty NOTE A fifth wheel king pin for attachment to semi- trailers for normal and heavy duty is covered in BS AU , “Dimensions + of – in diameter fifth wheel king pin for use with All burrs and sharp edges shall be removed NOTE It is recommended that fifth wheel couplings used with this king pin be marked with their maximum imposed weight- carrying capacity semi-trailers ” The clearance dimensions and fifth wheel positions are given in BS AU 3, “Clearance dimensions and fifth Tole rance s wheel positions for tractors and semi-trailers ” be NOTE Figure The values specified in imperial units are to be regarded as the standard NOTE The dimensions of the fifth wheel The tolerance on machining shall ± 01 in (0 25 mm) or as otherwise stated in All dimensions are in inches; metric equivalents, in millimetres, are shown in parentheses Figure — © BSI 02- 2000 " – " in d iame te r fifth whe e l king p in 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 01 : 52: 34 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 2a:1970 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