1、BRITISH STANDARD AEROSPACE SERIESBS EN 4176:2005Lockbolts, 100 countersunk normal head or protruding head, tension- / sheartype, close tolerance, in titanium alloy TI-P64001, anodized or with aluminium pigmented coating Collars in titanium TI-P99002 or aluminium alloy 2024 Metric series Technical sp
2、ecificationThe European Standard EN 4176:2005 has the status of a British StandardICS 49.030.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN
3、 4176:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2006 BSI 31 January 2006ISBN 0 580 47216 7National forewordThis British Standard is the official English language version of EN 4176:2005. The UK participation in its prepar
4、ation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or Euro
5、pean publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include al
6、l the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries o
7、n the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 19 and a back cover.The BSI
8、 copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 4176December 2005ICS 49.030.20English VersionAerospace series - Lockbolts, 100 countersunk normal head o
9、rprotruding head, tension- / sheartype, close tolerance, intitanium alloy TI-P64001, anodized or with aluminium pigmentedcoating - Collars in titanium TI-P99002 or aluminium alloy 2024 -Metric series - Technical specificationSrie arospatiale - Rivets bague sertie, tte fraise100 normale ou tte cylind
10、rique, traction ou cisaillement, tolrance serre, en alliage de titane TI-P64001, anodiss ou avec revtement alumino-organique -Bagues en titane TI-P99002 ou en alliage daluminium2024 - Srie mtrique - Spcification techniqueLuft- und Raumfahrt - Paniete, mit 100 normalemSenkkopf oder Universalkopf, Zug
11、- Schertyp, ausTitanlegierung TI-P64001, anodisiert oder mit Aluminiumpigmentierter Beschichtung - Ringe aus Titan TI-P99002oder Aluminiumlegierung 2024 - Metrische Reihe -Technische LieferbedingungThis European Standard was approved by CEN on 26 October 2005.CEN members are bound to comply with the
12、 CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or t
13、o any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.C
14、EN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland an
15、d United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 4176:2005:
16、 E2 Contents Page Foreword 3 1 Scope .4 2 Normative references .4 3 Terms and definitions.5 4 Quality assurance .5 5 Requirements 6 6 Delivery10 EN 4176:20053 Foreword This European Standard (EN 4176:2005) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AE
17、CMA-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given
18、the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2006, and conflicting national standards shall be withdrawn at the latest by June 2006. Attention is drawn to the possibility that some of the elements of this document may be the s
19、ubject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium,
20、 Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 4176:20054 1 Scope This standard speci
21、fies the characteristics, qualification and acceptance requirements for tension- / sheartype 100 countersunk normal head or protruding head close tolerance lockbolts in titanium alloy TI-P64001, anodized or with aluminium pigmented coating and collars in titanium TI-P99002 or aluminium alloy 2024, m
22、etric series, for use as permanent attachment fasteners in shear applications. It is applicable whenever referenced. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated ref
23、erences, the latest edition of the referenced document (including any amendments) applies. EN 4172, Aerospace series Lockbolts, protruding head, sheartype, close tolerance, in titanium alloy TI-P64001, anodized, metric series - Classification: 1 100 MPa (at ambient temperature) / 315 C. EN 4173, Aer
24、ospace series Lockbolts, 100 countersunk normal head, sheartype, close tolerance, in titanium alloy TI-P64001, anodized, metric series Classification: 1 100 MPa (at ambient temperature) / 315 C. EN 4174, Aerospace series Collars, swage locking, sheartype, in aluminium alloy 2024, anodized or chromat
25、ed, metric series. EN 4175, Aerospace series Collars, flanged swage locking, sheartype, in titanium TI-P99002, metric series. EN 4401, Aerospace series Lockbolts, protruding head, sheartype, close tolerance, in titanium alloy TI-P64001, with aluminium pigmented coating, metric series Classification:
26、 1 100 MPa (at ambient temperature) / 315 C. 1)EN 4402, Aerospace series Lockbolts, 100 countersunk normal head, sheartype, close tolerance, in titanium alloy TI-P64001, with aluminium pigmented coating, metric series Classification: 1 100 MPa (at ambient temperature) / 315 C. 1)EN 9133, Aerospace s
27、eries Quality management systems Qualification Procedure for aerospace standard parts. B46.1:1995, Surface Texture (Surface Roughness, Waviness, and Lay). 2)MIL-STD-1916, Department of defense test method standard DOD preferred methods for acceptance of product. 3)NASM1312-8, Fastener test methods M
28、ethod 8 Tensile strength. 4)NASM1312-16, Fastener test methods Method 16 Clamping force for installationformed fasteners.4)NAS 527:1962, Inspection Procedure for Flush Fasteners. 4)NAS 1413:1997, Pins and Collars, Swage Locking. 4)1) Published as AECMA Prestandard at the date of publication of this
29、standard. 2) Published by: American Society of Mechanical Engineers (ASME), 3, Park Avenue, New York, NY 10017, USA. 3) Published by: Department of Defense (DOD), the Pentagon, Washington, DC 20301, USA. 4) Published by: Aerospace Industries Association of America, Inc. (AIA), 1250 Eye Street, NW; S
30、uite 1100, Washington, DC 20005, USA. EN 4176:20055 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply. 3.1 inspection lot shall consist of finished parts which are of the same part number, fabricated by the same process, that are treated together in
31、 one furnace lot from the same heat of material and submitted for manufacturers inspection of the same time 3.2 crack a clear crystalline break passing through the grain boundary without inclusion of foreign elements 3.3 seam open surface defect 3.4 lap surface defect caused by folding over metal fi
32、ns or sharp corners and then compressing them into the surface 3.5 nick surface defect caused by the sharp edge of a cutting element 3.6 gouge surface defect caused by a scraft 3.7 inclusions non-metallic particles originating from the material manufacturing process. These particles may be isolated
33、or arranged in strings. 3.8 sampling plan a plan according to which one or more samples are taken in order to obtain information and possibly to reach a decision 3.9 acceptable quality level AQL a quality level which in a sampling plan corresponds to a specified but relatively high probability of ac
34、ceptance It is the maximum per cent defective (or the maximum number of defects per hundred units) that, for purposes of sampling inspection can be considered satisfactory as a process average. 4 Quality assurance 4.1 EN 9133 Qualification requirements shall consist of test as specified in Tables 1
35、and 2. Evidence shall be submitted, satisfactory to the user, that the manufacturer has produced a fastener of the same basic part number (excluding grip designation), diameter and material as those for which quotations are asked. This fastener shall meet the requirements of this specification. EN 4
36、176:20056 4.2 Quality conformance inspection and sampling plan shall consist of tests as specified in Tables 4, 5, 6 and 7. 4.3 Quality control records pertaining to the specific work order, lot number or job number shall be available for inspection by the user for a period of three years after manu
37、facturers final inspection date. 5 Requirements 5.1 Requirements for lockbolts The requirements for sheartype lockbolts, are given in Table 1. These requirements complement the requirement of all other standards or specifications referenced in the document of the lockbolt, and may be overridden only
38、 when specially instructed in the definition document. Inspection tests, given in Table 1, are mandatory (except as noted) on each inspection lot for the fastener manufacturer. Tests which are not mandatory for the fastener manufacturer may be applied by the receiving contractor. EN 4176:20057 Table
39、 1 Clause Characteristic Technical requirement Inspection and Test method Q/AaSample size5.1.1 Design and construction Conventional measuring methods Table 5 of MIL-STD-19165.1.1.1 Head protrusion (100 countersunk head) In accordance with the standard part drawings referenced within this specificati
40、on NAS 527 NAS 527 5.1.2 Material Titanium alloy TI-P64001 (6Al-4V) shear strength 675 MPa Composition requirements apply to finished lockbolts. As described by lockbolt manufacturer to assure production parts conform to applicable specifications 5.1.2.1 Lubricant In accordance with standard part dr
41、awings reference this specification. See applicable specification Visual examination Table 6 5.1.3 Dimensions Q 5.1.3.1 General dimensions Conventional measuring methods MIL-STD-19165.1.3.2 Surface texture The dimensions and any deviations in form and position, measured at ambient temperature, shall
42、 be within the limits specified in the definition document. B46.1 Visual examination A Table 4 5.1.4 Protective treatment 5.1.4.1 Finish In accordance with standard part drawings reference this specification. See applicable specification Visual examination Table 6 qualification 5.1.5 Manufacturing 5
43、.1.5.1 Heat treatment Shall develop mechanical properties as defined herein, without adverse effect on metallurgical properties as defined herein. Test of shear and metallurgical properties verifies heat treatment. As applicable in accordance with test requirementsQ 5.1.6 Mechanical properties 5.1.6
44、.1 Tensile strength Table 3 values are applicable to lockbolts having nominal grip of 1,5 times nominal diameter or greater. Values shall be shown in minimum grip with collar in minimum strength condition according to collar standard. Test No. 8 of NASM1312 A Table 6 continued EN 4176:20058 Table 1
45、(concluded) Clause Characteristic Technical requirement Inspection and Test method Q/A aSample sizeQ 5.1.6.2 Shear strength Table 3 values are applicable to lockbolts having a grip of twice nominal diameter or greater for protruding head type and grip of 2,5 times nominal diameter or greater for flu
46、sh head type. When the lockbolt is too short to shear test, a piece of wire of the same raw material lot heat treated with the fasteners shall be tested. Test No. 8 of NASM1312 A Table 6 qualification Q 5.1.6.3 Preload clamping force Table 3 values are applicable to lockbolts having nominal diameter
47、 or greater. Values shall be shown in minimum strength condition according to collar standard. Test No. 16 of NASM1312 A Table 6 qualification 5.1.6.4 Test collars Unless otherwise specified, test collars shall be as specified in Table 3. Not applicable 5.1.6.5 Installation Head dishing of flush hea
48、d lockbolts shall not exceed 0,077 mm when installed in a clearance fit hole. Lockbolt shall be “pulled“ into an 0,003 inch interference fit in 2024T3 aluminium plate in maximum grip. No premature breakage of the lockbolttail shall occur. Test to be performed for qualification only. Conventional mea
49、suring method pull in using standard installation tools Table qualification only 5.1.7 Metallurgical properties Permitted only as described in Figure 1. A crack is defined in Clause 3. See Table 8. Discontinuities shall be evaluated by metallurgical examination of cross sections at magnification of 50 to 60 (see Figure 2). Inspection stamping of parts not required 5.1.8 Product identification In accordance with standard part drawings reference this specification.B46.1 Visual examination NAS 527 5.1.9
