MIL-STD-908-1985.pdf

. +- ) MIL-STD-908(GL) 31 January 1985 MILITMYSTAND- PROVISIONSFOR EVALUATINGTHE QUALITYOF SPARE PARTSFOR MECWIWAND TEXTILEENDITE L. ) NO DELIWWDATA RBQUIMDBY THISDOCUMENT AREAQCIC MIL-STD-908(GL) 31 January1985 DEPARTMENTOFDEFENSE Washington,DC20301 Previsionsfor Evaluatingthe Qualityof Spare Partsfor Mechanicaland TextileEndItems MIL-STD-908(GL) I.This MilitaryStandardis approvedfor use by U.S.NatickResearch and DevelopmentCenter,Departmentof the Army,and is availablefor use by all Departmentand Agenciesof the Departmentof Defense. 2.Beneficialcamuents(recommendations,additions,deletias)and any pertinentdata whichmay beof usein impruvingthis documentshould be addressedto:U.S. Army NatickResearchand DevelopmentCenter,Natick,MA 01760-5014by usingthe self-addresaedStandardizationDocumentImprwement Proposal(DDForm1426) appearingatthe endof this documentor by letter. ii I I MIL-Slincorrect;inccxnplete; illegible;or of impropersize, location,sequence,or methodof applicationx 1.Missing,incorrect,or illegible: - sizeor canbinationlabelx -identificationlabel 2. Not attachedas specified 3. Misplacedor stitchingthrough printing 12 . I i T ) I L MXL-STD-908(GL) 31 January1985 5.1.2Group B categoriesof defects. CATEGORY VII -Plasticcaaponentdefects Defect 1. 2. 3. 4. 5. 6. 7. 8. 9* 10. 11. 12. 13. 14. 15. 16. 17. 18. Color not as specified,not uniformin color,or does not matchthe standardsample Discolored,faded,or mottled Surface haze, colorsegregation,or resinstreak Any roughor sharp edge,or notfreeof flash Evidenceof applicationof an unspecifiedfinish Knockout markthat will be clearly visablein useon end item Knockout markdeeperthan permittedby the applicablespecification or drawing Chalked, burned,bloan,or scaley Thin spot, wrinkle,pimple,or crater Roughsurface Design detail deviatingfran specificationor drawingrequirements Similatedfinish not as specified(when required) Scratch, nick,or other surfacedamagethat willaffectappearance Crack, break,rupture,or fracture Bent,twisted, malformed,or otherwiseimpaired. Crazing,pitted,porous,or bubble(openor closed) Heat mark,blister,or unevensurface Oil, dirt,or foreign matteraffectingserviceabilityor appearance CATEGORYVIII - Weldingdefects Defect 1, 2. 3. 4. 5* 6. 7. 8. 9. 10. Undercut Underfill Overlap Incanpletefusion (where visible) Slag,flux, or spatter Arcstrike Burnthrough Insufficientpenetration(where visible) Surfacecracking Surfaceporosity 13 -) lfIL-sTD-908(GL) 31 January1985 - GroupB categoriesof defects(catd) CATEGORYVIII- Welding defects(ccmtd) Defect 11. Unfilledcratere 12. Misalignmentof weldedparts 13. Distortionof base metal 14. Poorlyformed beads 15. Underweldedor overwelded CATEGORYIX - Solderingdefects Defect 1. Excessivesolderor solderruns 2. Solderspatteror beads 3. Charringor blisteringof ccmpcments 4. Solderpoints(peaks) 5. Pits,scarsor holes 6. Fractured(cracked)solder 7. Contamination(not clean-evidenceof foreign matter) 8. Inadequatewetting,or dewetting CATEGORYX - Moldedor cast metalitem defects Defect 1. Anycrackin surface 2. Hottearsor coldshuts 3. Foreignmatter,adheringto or embeddedin surface 4. Tinstreak 5. Gas hole 6. Oxides,visableon surface 7. Porosity 8. Segregation 9. Designdetaildeviatingfrom specificationor drawingrequirements 14 I 1 MIL-STD-908(GL) 31 January1985 Group B categoriesof defects(centd) CATEGORYXI - Painting,finishing, anodizingdefects Defect 1. 2. 3. 4. 5. 6. 7. 8. 9. 5.2 Areaof no costing Color not as specified Exposedsurface dueto scratch,buff,dig,or abasion Run,sag, blistering,cracking,flaking,orp-=lw3 Dust,dirt,spot, or stainthat cannot be removed Paintedor coatedsurface not uniformin appearance Pcnwdery areas(anodizing) Excessivecontact marks(anodizing) Contactmarksnot in areasof minimumexposure(anodizing-whenspecified) Dimensionalexamination.Unless otherwisespecifiedin the drawing, specification,or purchasedocument,the enditem shall be examinedfor all specifieddimensions.Whenthe drawing,specification,or purchasedocument identifiesspecific dimensionsto be examined,only those dimensionsshall be examined.Any dimensionexceedingthe applicabletoleranceshall be classifiedas a defect.Thelot shall be expressedin unitsof the enditem beingprocured.The sample unitshall beone eachof the enditem being procured.Unlessotherwisespecifiedin the drawing,specification,or purchasedocumentthe inspectionlevel shall beS-3 andthe AQL,expressedin termsof defectsper hundredunits,shall be 4.0. 5.3Packaginginspection.An examinationshall be madeto determinethat the preservation,packingand markingcanply withthe section5 requirementsof the applicablespecification,or the packagingrequirementsof the drawingor purchasedocument.Defectsshall be scoredin accordancewiththe list below. Thesampleunitshall beone shippingcontainerfullypackaged.Thelot size shall bethe numberof shippingcontainersin theinspectionlot.The inspectionlevel shall be S-2 andthe AQL,expressedin termsof defectsper hundredunits,shall be 2.5. ExamineDefect Marking(ExteriorOmitted;incor