1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationAEROSPACE SERIESSpecification for nuts, plain and slotted (unified hexagons and unified threads) for shear bolts for aircraft in corrosionresisting steelnullS A nullnullnullnulln
2、ullnullnullnullBS A 400:2010 BRITISH STANDARDPublishing and copnullright infornullationThe BSI copyright notice displayed in this document indicates nullhen the document nullas last issuednullnull BSI 2010ISBN nullnullnull 0 nullnull0 nullnullnullnull1 4InullS 4nullnull0null0nullnull0The nullollonul
3、ling BSI renullerences relate to the nullornull on this standard: nullommittee renullerence Anullnullnull12 Dranullt nullor comment 10nullnull0212nullnullnull DnullPublication histornullnullirst punulllished Septemnuller 2010Anullendnullents issued since publicationnullate nullext affected null BSI
4、2010 null iBS A 400:2010BRITISH STANDARDContentsnullorenullord iinull Scope 1null Normatinulle renullerences 1null nulleneral renulluirements 1null nullaterial and manunullacture 1null Dimensions 1null Screnull threads 1null Antinullcorrosion treatment 2null Inspection procedure 2null Designation 2A
5、nnexesAnnenull A nullinnullormatinullenull Inch to millimetre connullersion 5Binullliography 6nullist of tablesTanullle 1 null Dimensions onull slotted nuts 3Tanullle 2 null Dimensions onull plain nuts 4Tanullle Anull1 null nullonnullersion onull inches to appronullimate millimetre enulluinullalents
6、 nullrounded to one decimal placenull 5Sunullnullarnull of pagesThis document comprises a nullront conullernull an inside nullront conullernull pages i to iinull pages 1 to nullnull an inside nullacnull conuller and a nullacnull conullernullBS A 400:2010ii null null BSI 2010BRITISH STANDARDnullorenu
7、llordPublishing infornullationThis British Standard is punulllished nully BSI and came into enullnullect on null0 Septemnuller 2010null It nullas prepared nully Technical nullommittee Anullnullnull12nullAerospace fasteners and fastening systemsnull A list onull organinullations represented on this c
8、ommittee can nulle onulltained on renulluest to its secretarynullPresentational connullentionsThe pronullisions onull this standard are presented in roman nullinullenull uprightnulltypenull Its renulluirements are enullpressed in sentences in nullhich the principal aunulliliary nullernull is nullsha
9、llnullnullCommentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis punulllication does not purport to include all the necessary pronullisions onull a contractnull nullsers are re
10、sponsinullle nullor its correct applicationnullConullpliance nullith a nullritish Standard cannot confer inullnullunitnull fronulllegal obligationsnullnull BSI 2010 null 1BS A 400:2010BRITISH STANDARDnull ScopeThis British Standard specinulles the materialsnull dimensionsnull nullnish and inspection
11、 renulluirements nullor corrosionnullresisting steel nuts nullith uninulled henullagons and uninulled threads nullor use nullith shear nullolts nullor aircranulltnull It manulles pronullision nullor ranges onull plain and slotted nutsnullnull nullornullatinulle referencesThe nullollonulling renuller
12、enced documents are indispensanullle nullor the application onull this documentnull nullor dated renullerencesnull only the edition cited appliesnull nullor undated renullerencesnull the latest edition onull the renullerenced document nullincluding any amendmentsnull appliesnullBS S null0null High c
13、hromiumnullnicnullel corrosion resisting steel forging stocnull, nullars, forgings and parts nullnullnullnull to 1 nullnullnull nullnullanull limiting ruling section 1nullnull mmnullBS A 100null nullpecinullcation for general renulluirements for nullolts and free running nuts of tensile strength not
14、 exceeding 1 24null nullnullaBS nullN 2null1nullnull nullassivation of corrosion resisting steels and decontamination of nicnullel nullase alloysnull nulleneral renulluirenullentsThe nuts shall not nulle used as direct replacements nullor those connullorming to BS A 110 nullithout the authority onul
15、l the original enulluipment manunullacturernulls Design Authoritynullnullnullnullnull nullhis standard has nulleen created to provide a cadmium free alternative to plain and slotted nuts conforming to nullnull A 11null.The nuts shall connullorm to BS A 100 in respect onull manunullacturenull screnul
16、lthreadsnull identinullcation and marnullingnullnull nullaterial and nullanufactureThe nuts shall nulle machined all onuller nullrom corrosionnullresisting steel connullorming to BS S null0 nullcondition: hardened and temperednullnullnull nullinullensionsAll nullnished nuts shall connullorm to the d
17、imensions and tolerances ginullen in Tanullle 1 or Tanullle 2 as appropriatenullnullnullnullnull nullhe values in inch units are to nulle regarded as the standard. A tanullle is given in Annex A to provide a ready means of calculating the approximate millimetre enulluivalents of the inch dimensions.
18、 nullore accurate conversions should nulle nullased on the tanullles in nullnull 35null.null Screnull threadsThe nuts shall hanulle uninulled threads onull the nullorm and class onull nullt specinulled in BS A 100nullBS A 400:20102 null null BSI 2010BRITISH STANDARDnull Anticorrosion treatnullentAll
19、 nullnished nuts shall nulle passinullated in accordance nullith BS nullN 2null1nullnullmaterial type: nullerritic and martensitic chromium steelsnullnullnull Inspection procedureThe nuts shall nulle inspected in accordance nullith BS A 100nullnull nullesignationThe nuts shall nulle designated A400n
20、ullnullnull 1nullnull nullhere nullnull is the part renullerence sunullnullnull specinulled in Tanullle 1 or Tanullle 2 as appropriatenullnullnullnullnull nullor examplenull A4nullnullnullnullnull, A4nullnullnullnullnull.1nullnullarnulling A400 on or in relation to a product represents a manunullact
21、urernulls declaration onull connullormitynull inullenull a claim nully or on nullehalnull onull the manunullacturer that the product meets the renulluirements onull the standardnull The accuracy onullthe claim is solely the claimantnulls responsinullilitynull Such a declaration is not to nulle connu
22、llused nullith thirdnullparty certinullcation onull connullormitynullnull BSI 2010 null nullBS A 400:2010BRITISH STANDARDTanullle 1 nullinullensions of slotted nuts Dimensions in inchesSlotted nut null nullhird angle pronullectionnullenull1 nullountersinnull null0nullnull120null on this nullace only
23、 to manullor diameter onull threadnull2 TannullR rounded slotsnullnull nullhamnuller 2nullnullnullnullnullnull on this nullace only to across nullats nullAnullnullnullnull null null null null null null null null nullnull nullnull nullnull nullnullnullonullinal sinullenullecinullal enulluinullalent o
24、f nonullinal sinullePart reference suffixnullidth across nullatsnullidth across cornersnullhicnullness Slot nullonuller face of nut to bottonull of slotB C Gnullepth Jnullidth K Lnullinnull nullaxnull nullaxnull nullinnull nullaxnull refnull nullinnull nullaxnull nullinnull nullaxnullnullnullnull2nu
25、ll nullNnull 0null2null0 nullS 0nullnullnull0 0nullnullnullnull 0null4nullnull 0null1null0 0null200 0null0null0 0null0null0 0null0null0 0null100 0null110nullnull1nullnullnull24 nullNnull 0nullnull12 null nullS 0null4null1 0null4nullnull 0nullnull0null 0null1null0 0null200 0null0null0 0null0null0 0nu
26、ll0null0 0null100 0null110nullnullnullnullnull24 nullNnull 0nullnullnullnull nullS 0null4nullnull 0nullnull00 0nullnullnullnull 0null1null0 0null200 0null0null0 0null0null0 0null0null0 0null100 0null110nullnull1nullnullnull20 nullNnull 0null4nullnull null nullS 0nullnullnull4 0nullnullnull2 0nullnul
27、lnull0 0null1null0 0null200 0null0null0 0null0null0 0null0null0 0null100 0null110nullnullnull20 nullNnull 0nullnull00 NS 0nullnullnullnull 0nullnullnullnull 0nullnullnull4 0null1null0 0null200 0null0null0 0null0null0 0null0null0 0null100 0null110nullnull1nullnullnull1null nullNnull 0nullnullnull2 nu
28、ll nullS 0nullnull41 0nullnullnull0 0nullnullnullnull 0null1null0 0null200 0null0null0 0null0null0 0null0null0 0null100 0null110nullnullnullnullnull1null nullNnull 0nullnull2null nullS 0nullnullnullnull 0nullnullnullnull 1null010 0null1null0 0null200 0null0null0 0null12null 0null1nullnull 0null100 0
29、null110nullnullnull1null nullNnull 0nullnullnull0 SS 0nullnull2null 0nullnullnullnull 1null0nullnull 0null1null0 0null200 0null0null0 0null12null 0null1nullnull 0null100 0null110BS A 400:20104 null null BSI 2010BRITISH STANDARDTanullle 2 nullinullensions of plain nutsDimensions in inchesPlain nut nu
30、ll nullhird angle pronullectionnullenull1 nullountersinnull null0nullnull120null on one nullace only to manullor diameter onull threadnull2 nullhamnuller 2nullnullnullnullnullnull on nulloth nullaces to across nullats nullAnullnullnullnull null null null null null null nullnullonullinal sinulle null
31、ecinullal enulluinullalent of nonullinal sinullePart reference suffixnullidth across nullats nullidth across cornersnullhicnullnessB C Gnullinnull nullaxnull nullaxnull nullinnull nullaxnullnullnullnull2null nullNnull 0null2null0 nullT 0nullnullnull0 0nullnullnullnull 0null4nullnull 0null1null0 0nul
32、l200nullnull1nullnullnull24 nullNnull 0nullnull12 null nullT 0null4null1 0null4nullnull 0nullnull0null 0null1null0 0null200nullnullnullnullnull24 nullNnull 0nullnullnullnull nullT 0null4nullnull 0nullnull00 0nullnullnullnull 0null1null0 0null200nullnull1nullnullnull20 nullNnull 0null4nullnull null n
33、ullT 0nullnullnull4 0nullnullnull2 0nullnullnull0 0null1null0 0null200nullnullnull20 nullNnull 0nullnull00 NT 0nullnullnullnull 0nullnullnullnull 0nullnullnull4 0null1null0 0null200nullnull1nullnullnull1null nullNnull 0nullnullnull2 null nullT 0nullnull41 0nullnullnull0 0nullnullnullnull 0null1null0
34、 0null200nullnullnullnullnull1null nullNnull 0nullnull2null nullT 0nullnullnullnull 0nullnullnullnull 1null010 0null1null0 0null200nullnullnull1null nullNnull 0nullnullnull0 ST 0nullnull2null 0nullnullnullnull 1null0nullnull 0null1null0 0null200null BSI 2010 null nullBS A 400:2010BRITISH STANDARDAnn
35、ex A (infornullatinulle) Inch to nullillinulletre connullersionTanullle Anull1 Connullersion of inches to approxinullate nullillinulletre enulluinullalents (rounded to one decinullal place)in nullnullnull nullnull4nullnull1null nullnullnullnullnullnull nullnullnullnullnull1null 11null1null 12nullnul
36、lnullnull1null 14nullnullnullnullnull 1nullnullnullnull 1nullnull1nullnullnull 22null21 2nullnull42 null0nullnullBS A 400:2010null null null BSI 2010BRITISH STANDARDnullibliographnullnullor dated renullerencesnull only the edition cited appliesnull nullor undated renullerencesnull the latest edition
37、 onull the renullerenced document nullincluding any amendmentsnull appliesnullBS A 110null nullpecinullcation for steel nuts nulluninulled hexagons and uninulled threadsnull for shear nullolts for aircraftBS nullnull0null Conversion factors for unitsThis page deliberately left blankBSI is the indepe
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