1、BRITISH STANDARD AEROSPACE SERIES BS EN 2236:1992 Pins, headed, close tolerance shank, in alloy steel Technicalspecification The European Standard EN2236:1992 has the status of a British StandardBSEN2236:1992 This British Standard, having been prepared under the directionof the Aerospace Standards P
2、olicy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15July1992 BSI 12-1999 The following BSI references relate to the work on this standard: Committee referenceACE/12 Draft for comment90/79054DC ISBN 0 580 20978 4 Cooperating organizations The European Com
3、mittee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suom
4、en Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazi
5、one Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association
6、suisse de normalisation UnitedKingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN2236:1992 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN2236 3 National annex NA (informative) Commit
7、tees responsible Inside back cover National annex NB (informative) Cross-references Inside back coverBSEN2236:1992 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version ofEN2236, Ae
8、rospace series Pins, headed, close tolerance shank, in alloy steel Technical specification, published by the European Committee for Standardization (CEN). EN2236 was produced as a result of international discussions in which the UnitedKingdom took an active part. A British Standard does not purport
9、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
10、, pagesi andii, theEN title page, pages2to6, 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.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
11、EN 2236 April 1992 UDC 621.882.6-034.14:620.1:629.7 Descriptors: Aircraft industry, hinge pins, alloys steels, characteristics, inspection, tests, sampling English version Aerospace series Pins, headed, close tolerance shank, inalloy steel Technical specification Srie arospatiale Axes lisses tte, ti
12、ge tolrance serre en acier alli Spcification technique Luft- und Raumfahrt Pabolzen mit Kopf, aus legiertem Stahl Technische Lieferbedingungen This European Standard was approved by CEN on1992-03-27. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the condit
13、ions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three o
14、fficial versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austri
15、a, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue d
16、e Stassart 36, B-1050 Brussels 1992 Copyright reserved to CEN members Ref. No. EN2236:1992EEN2236:1992 BSI 12-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After enquiries and votes carried out in accordance with the rules of
17、 this Association, this Standard has successively received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. National Standards identical to this EuropeanStandard shall be published at the latest by1992-10-31 and c
18、onflicting national standards shall be withdrawn at the latest by1992-10-31. According to the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands
19、, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Approval of manufacturers 3 5 Acceptance conditions of pins 3 6 Rejection and re-tests 5 7 Test report 5 Table 1 3 Table 2 Sampling plan 5 Table 3 Maximum d
20、epth of discontinuities 5EN2236:1992 BSI 12-1999 3 1 Scope This standard completes the characteristics fixed in the product standard or definition document. It specifies the requirements concerning the approval of manufacturers, and acceptance conditions for pins, headed, close tolerance shank, in a
21、lloy steel. 2 Normative references ISO 2859-1, Sampling procedures for inspection by attributes Part1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection. ISO 3534, Statistics Vocabulary and symbols. ISO 5857, Aerospace Alloy steel protruding head bolts with strength
22、classification1250MPa and MJ threads Procurement specification. EN 2000, Aerospace series Quality assurance EN aerospace products Approval of the quality system of manufacturers. 3 Definitions 3.1 inspection lot seeISO5857 3.2 discontinuity seeISO5857 3.3 crack seeISO5857 3.4 seam seeISO5857 3.5 lap
23、 seeISO5857 3.6 simple random sampling seeISO3534 3.7 sampling plan seeISO3534 3.8 limiting quality (LQ) seeISO3534 3.9 acceptable quality level (AQL) seeISO3534 3.10 acceptance number (Ac) seeISO3534 4 Approval of manufacturers SeeEN2000. 5 Acceptance conditions of pins SeeTable 1. The manufacturer
24、 shall carry out the inspections and tests on each inspection lot. Unless otherwise stated, the pins shall be selected from the batch to be tested by simple random sampling. Each pin may be submitted to several tests. The pins to be subjected to destructive tests may be those on which non-destructiv
25、e tests have been performed. Table 1 Chapter or clause Characteristic Requirement Inspection and test method Number of pins or specimens to be tested 5.1 Material In conformity with the product standard or definition document. See material standard. 5.2 Dimensions In conformity with the product stan
26、dard or definition document. Standard gauging. Table 2 5.3 Manufacture 5.3.1 Heat treatment Any blanks shall not be hardened more than twice. 5.3.2 Surface roughness In conformity with the product standard or definition document. Visual or tactile comparison. Table 2 5.3.3 Surface coating In conform
27、ity with the product standard or definition document. See coating standard. Table 2EN2236:1992 4 BSI 12-1999 Table 1 Chapter or clause Characteristic Requirement Inspectionandtestmethod Number of pins or specimens to be tested 5.4 Mechanical properties 5.4.1 Tension R p0.2 ,R mandA shall be in confo
28、rmity with the requirements of the material standard-line7 (heat treatment of use). This requirement applies on a pin or on a specimen, when pin dimensions do not allow to perform the test. See material standard. The specimen shall be: of the largest possible section; taken from apiece of semi-finis
29、hed product used for the manufacture of pins, and treated with them. One per inspection lot 5.4.2 Hardness Prior to surface coating, hardness on one end shall be in conformity with the requirements of the material standard-line7 (heat treatment of use). When there is no conformity: repeat the heat t
30、reatment of the inspection lot; use twice the initial number of specimens and measure hardness as specified above. See material standard. SeeISO5857 line “Acceptance” 5.5 Discontinuities SeeTable 3. Prior to surface coating, pins containing cracks and those showing transverse seams or laps (i.e.at a
31、n angle of more than10 with respect to the longitudinal axis) shall be rejected and destroyed. Longitudinal and circumferential current flow inspection. The current value shall be20A per millimetre of the shank diameter. In case of doubt microscopic examination (X100). 100% 5.6 Marking In conformity
32、 with the product standard or definition document. Visual inspection. Table 2 5.7 Packaging Pins shall be packed in such a way as to avoid any deterioration or corrosion during handling, transport or storage. Each basic package shall contain only pins with the same designation, and the same inspecti
33、on lot number. Visual inspection 100% 5.8 Labelling Each basic package shall clearly indicate, on a label, the designation, quantity, inspection lot number and the inspection stamp. Visual inspection. 100%EN2236:1992 BSI 12-1999 5 Table 2 Sampling plan a Table 3 Maximum depth of discontinuities 6 Re
34、jection and re-tests Inspection lots not in conformity with the acceptance requirements, shall be submitted for re-inspection only after all defective units are removed and/or defects corrected. Twice the initial number of specimens shall be used for re-inspecting or re-testing the attributes causin
35、g initial rejection. The same acceptance number (Ac) shall be used. 7 Test report A certificate of conformity shall be furnished to the user when requested in the order. Batchsize Samplesize Ac LQ% 51to90 13 0 16 91to150 20 0 16 151to280 32 1 7,6 281to500 50 1 7,6 501to1200 80 2 6,5 1201to3200 125 3
36、 5,4 3201to10000 200 5 4,6 10001to35000 315 7 3,7 35001 to150000 500 10 3,1 150001 to500000 800 14 2,5 a In conformity with ISO2859-1, Inspection levelII, single sampling plan for normal inspection AQL1%. Dimensionsinmillimetres Nominaldiameterofpin 3 4 5 6 7 8 10 Depth 0,05 0,08 0,10 0,13 0,156 bla
37、nkBSEN2236:1992 BSI 12-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by theAerospace Standards Policy Committee (ACE/-) to Technical CommitteeACE/12, upon which the following bodies were represe
38、nted. British Industrial Fasteners Federation Association of Electronics, Telecommunications and Business Equipment Industries Ministry of Defence Society of British Aerospace Companies Ltd. National annex NB (informative) Cross-references The British Standard corresponding to the European Standard
39、referred to in the text is identical in number and title with that given in clause2. The British Standards corresponding to the InternationalStandards referred to in the text are as follows. Publication referred to Corresponding British Standard EN 2000:1991 BS EN 2000:1992 Quality assurance EN aero
40、space products Approval of the quality system of manufacturers ISO 2859-1:1989 BS 6001 Sampling procedures for inspection by attributes Part 1:1991 Specification for sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection ISO 3534:1977 BS 5532 Statistical terminology Part
41、1:1978 Glossary of terms relating to probability and general terms relating to statistics ISO 5857:1988 BSA299:1989 Specification for procurement of alloy steel protruding head bolts with strength classification1250MPa andMJ threadsBS EN 2236:1992 BSI 389 Chiswick High Road London W4 4AL BSIBritishS
42、tandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishSt
43、andards 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 BritishStandard would inform the Secretary of the techni
44、cal committee responsible, the identity of which can be found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for
45、all BSI, international and foreign standards publications should be addressed to Customer Services. Tel:02089969001. Fax:02089967001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as BritishStandards, unless oth
46、erwise 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
47、 and services. Contact the Information Centre. Tel:02089967111. Fax:02089967048. 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.
48、 Tel:02089967002. Fax:02089967001. 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, store
49、d 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 details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may in
