MIL-STD-105E (1989) – Sampling Procedures and Tables for ...

1 NOT MEASUREMENT. SENSIUYE h MIL-STWI05E. 10 MAY 1989. SUPERSEDING. MIL-STD-105D. 29 APRIL 1963. military STANDARD. Sampling Procedures AND Tables . for inspection by attributes . AMSC N/A AREA Qcil . ~~~ & Approved for public reiesse; dktribution is Unlimfi !QL- SI'D105E. DEPA~ W DEFENSE. Washbgmn, DC 20301. SAT*LDG P~ T I!ND'ZABESFOR 1. Ttis tilitarystandad is approvedfor use by all Depsmmms and Jqencies of - ~~~ of ~f- .. 2. Beneficial~.ts Cemmm&tiom. additions,Wetions) and any ~ may beef usein~this~ shouldbe addressedto: CnRInancier Us. Amy AmamE!!!Rem-a, Dwelopnent and +-king Ckmer M-IN: SK?R-BAC-WBM!J . 6. Picatinnytisenal,NJ 07806-5000. by self-a=-essed&.andardizat ion Dmmmt m~ PrepSal (DD Fom 1426)~L-hq at the md of this docmmt or letter. ii MZL-S'IZ+1C5Z. mRE3m* . ms providessawling proce&res and referwm Tables for use in on the +mce 05 e%.ts when a sa~ies of-iots or bat~s are produ~ ti a stableenvironmrt.

2 This publicationshouldbe-used to guide the user in the ~kpmnt of an that providesa co=. eff~ive qroach to attaining cm-:idm~ in pro&t ~liance wi thca%racaual te-&%i~ reqJ ats. The user is warned of the assumedrisks relativeto the *sem sanple size and w-. ~ifications shouldnot contakn requirement s for use of specific , !23Z shxld .!y provideAQL's or H?D's as a -~rmem. pkns fc= coxinuous, ra'hr than lot inspection ,are contm M. iii ~ GmTmTs Page Paragraph 1. 1. -se .. 1. *liation .. 1. 2. ~IxmPEurs- .. 1. W. qplicable .. 1. 3. =INITIONS .. 1. Qdality Ievel WE) .. 2. Average Outgo ~Quality(lQ) .. 2. Averaoe OutqoingQualityWt ( 2. Classificationof 2. 2. 2. 2.. 3. DefectsPer Ru@edUn .. 3. ~i~.. 3. ~aim by Attribxes .. 3. w&or 3. Im or Batch 3. Major 3. Major 3. Minor Defect .. 3. Minor Defeaive.. 3. 4. ~s 4. 4. Sanple Size COde~tt=v .. 4. Salq?ling 4. unit of 4. 4. ~mxm='nm .. 4. Written ~ .. 4.

3 NmcVnfozmne .. 4. Fonmticm and Itificatim of ~ or =Cks.. 5.. 5. ML *.. 5. Umkation .. 5. choosingAQU .. 5.. iv mL-sm-lo5E. CcNTmrs - Conttiued. Page Paragraph ~B~ .. Sarrpling. 5.. 5. The of .. 5: Double or MQtiple Sampling .. 5. ~on P~ .. WitdlirlgP~ .. : Normalto .. 6. Tight- to Normal .. 6. Normalto ~ ..*..**..**.. 6. Rduced to 6. Disconthtion of~ .. 7. 7. ~ion Wvel .. 7. Co& utters .. 7. ~aining San@ing 7. TYF= of sapling Pkns .. 8. Determinationof~ability.. 8. P~Defective~ion.. 8. Single Sanql@ 8. (?. Sa@ing 8. FhltipleSanpling. *.. 8. ~ p~ for Redu*IrqeCtion .. 8. DefectsPer ?lundmdt?nit s~ion .. 9. Idniting@ality .. 9. ~s ..*.. 9. ~t@~merkic ~ .. 9. A~ge Sanple Size .. 9. 5. TABES ..*..*..*.. 11. Table I. Sa@e Size Coda 13. II-A. Single San@ing Plans for Normal- ~im Naster table).. 14. II-B. Single Smpliq Plms for Tightewd ~i~ ~=t~le) 15. II-C. Single Sapling Plans for ~. ~ia 16. III-A.

4 Double SamplingPlans for Normal ~i~ -a~le).. 17. III-B. Dcxble Sapling Plans for Tight- ~m ~er=e) .. 18. III-C. Double Reduced ~im (Mastertable).. 19. v MIL-STW105E. mt'n'mrs- Conthued. Page Table IV-A. Mltiple Sa@ing Plans for Norml Inspectim M3ster-le) .. 20. IV-B. for Tightened ~im (MastertaMe) .. 22. TV-c. Mdtiple SamplingPlans for ReduOed inspection (Mastertable).. 24. V-A. Average Outgoinguty IAmit F~s for lwml~on (Sin@e Zq) .. 26. V-B. ~ge Outgo* QualityLimit Fa=ors for TightenedIMpeCtiOn (S=le ~1~).:.. 27. %3-A. uting Quality (h Perumt Def-iue) for Wch a Pa = 10% (forNomal Inspemion, S~le Saxrpling) .. *o 28. V3-3. LimitingQuality (inDefectsper ~. Unks) for which the Pa = 10% (forNozmal inspection ,Single Sanplhg). 29. XI-A. Unliziq Quality (inP~t mfecti=) fo~. khid. thePa = 5% (forNom@ ~ionl SingleSawling).. 33. VII-B. LimitingQuality (fiDefectsper Hmdma Units) for which the Pa = 5% (f= W*.

5 ~m, Siwle S=@@ ..*.. 31. ~*~1- Li,mitNmbersfor ~ .. 32 . IX. Auerage SampleSize Cumes for DDuble and .. 33. ~ltig pl= and cparatirq~amic Cumes (andData) for: X-A. San@e Size ~ktter 34. X-3 . Sanple Size ~Utter B .. 36. x-c. Sanple Size Mkter C .. 38. X-D. San@e Size Co& LetterD .. 40. X-E. Sanple Size ~Utter E .. 42. X-F. San@e Size Mletter F .. 44. x-G . Sanple Size MUtter G .. - 46. X-H. ~le Size @ckletter H .. 48. X-J. qksM-~ *.. 50. X-K. Sauple Size MIetter K ..----------------- 52. X-L. ~le S~M~ L .. 54. x-M. Sanple Size M~M .. 56. X-N. San@eSizeM E~N .. 58. x-P. Sal@esizeM wtterP .. 60. x-Q. ~le S~Mk= * + *.==.* + *..= 62. X-R. ~le S@ Mk=R ..= ~ 64. vi mL-sl'wlo5E. , CCN'TS - Continued. Page x-s. ~~e size ~ ~tt~v S .. 66. Paragraph 6..*.. v Intf2nckci 67. Subject'I'em(keyuofi) tist~ .. 67. ~fr~P~im Issw .. 67. mlmsAL.. 68. F2L-S'ID-105S. 1. ~~~. Pqse. This ~li=tim establisheslot or bat~ sapling plans and proceduresfor ~ion by attributes.

6 1'nis publi=tion shallnot & irfter- superm3e or confli= with any amtraCtti ~ s. m words awqX , a~ , acceptable * e tc, refer only to the contractor's use of the sanplingpkms Writ- in this ~anddonotinplyana~ W. -theGove&mmnt to accept any prcdom. Deterfnination of aqability by the Gwen :=% shall k as desm~ in contractual~ts. me Sarfpling plans *sdhd in Ws standad m awli-le to U's of .01pe~t or ~~ and ore not suitablefor ++lications where quality1-1s in the defemive are ; per million range m be realiz05. are applicable, a. ElrIc items. b. Cmponents c. Qerations d. Materialsin process. e. Su@ies in storage. f. Maintenance~ations. 9. Data or records. h. Mmbistrative ~- Theseplans are intendedprimarilyto be used for a continuingseries of lots 0: batches. The plans may also be used for the inspectionof isolatedlots or Mches, W., in MS latter=, m = K =i~ to ~t ~ ~m characteristicmrves to find a plan whichwill yieldthe desiredprotectim ( ).

7 2. N&. -liable. 3. =INITICNS. 1. FEL-S'IW105E. #. z ~able QualityLevel (ML) . When a mntinuous seriesof 10Es is considered,the AQiiis tbe qualitylevelfib, for the roses of sa@ ~.ion, is the limitof a satisfactoryprocessaverage (Se ). NOTE: A sanpl~ plan and an AQL are chosenin accordanm with the risk assured. Useofa@ueoflQL fora a2rtain&!fector group of &fec5s indicam that the ql~ PM till acoeptthe -t majorityof the lots or bata pbded the prooess -X level of ~ defectiwe (or&fects per huxlred units) in these lots or batchesbe no greaterthan the ~ignated value of A& Thus, the AQL is a ckignated value of ~ defective (or&facts per hundredunits) for fich btswill~a~+m~oftk timbythesaqlingp ~re bing used. The ~liw pl~ prfi~ here~ ~ ~ ~ tit ~ p~i~ty of a~. at the ~ignat~ A@ ~ue ~ ~ the sanplesize,~ Z~N ~Xr :0= 1~~ samples -n for mall ones, for a givenAQL. The AQL alone does not idelm=if y the chanoes of aqing or rejectingindividual10Ls or batches M.

8 -y dire- ~ relates to what might be ~ed frun a seriesof lots or batches, prm i- * steps indi=ted h -s publi~tion aze taken. lt is ~sary to =eYer to the iscic ~ of to *texmine the relative risks. Average Qxqoing QualityLimit (ADQL). The M(2L is the maximum ACQ fora 9L~ a9L~~ -lW pkn. Factors for ~@? ML tiues are givm M. Tabie V-A for each of ~ singlesaqlimg plans for normal irqection and in Table V-3 for each of the singlesmpling plans foz tightened~ on. ClassifimEion of Defects. A classification of defectsis t!! enumerationof pcsstiie defects of the unit of pxduct classifiedamrdirq to their seri~. Czlti~ DefS&. A criticaldefect is a ~fect that j~ and ~ri=ce ~mte would result in~ hazardousor unsafeconditionsfor individualsUS*, --, or ~upontheprodwt, ora ~fecttbat~ti experim indicate is likely to prevent perf~ of ttE ~cal fun-on of a major * itm SU* as a Ship, aixuaft # tank, nbsile, or ~ title.)

9 Critidl Defective. A criticalckfectiveis a unit of prockt uhi~. contti one or mre criti~ defectsti may also contdn mejor and/or minor defects. Defect., A defect is any nonconformanm of the unit of product with specimTEi%@l=mts . 2. laks'm-lo5E. A def=~ive is a unit of productwhich containsone or mre per HunckedUnits. The nwber of defe=s per hundred units of ~Y. gim quantityof units of productis one hundredtimes the mm&r of &fects con=zinedtherein (one or mme *fec&s being possible in any unit of product). diviti by the total nunberof units of product, : Defects p = Nunberof &fects x 100. hundredunits Nmbar of units ~~. Impaction. Inspectionis the processof ~imt ~gt testmt cr the unit of pmdu~. with the reqair-nts. 7,1i --- ~io~. T by Attribtes. Inspectim by attributesis inspectionwhe~. eizher & unit of productis classifiedsimplyas defectiveor non+ef=eive, or ~he number of defe~.sti the unit c= courted,with re~st to a givm ~~:i~m or set or requirements.

10 Tit or -t&l. The term lot ox katch shall man inspectionlot or i== batcb. , , a units of product from whi~ a sanple is EC be dram and i~ed md may dif5erfrm a mll-~ion of units designated as a 10= or bat~ for 0 = purposes ( , production,shipnent,etc.). bt or Batch Size. The lot or ~t~ size is the number of units of prtib A a lot 0:bata. M3jor Defect. A major defecL is a -fact, other than criti-, that is liKelyto resultin failure,or to reducemateriallythe usabilityof the unit of productfor its int- ~- ~ajor * f~i~. A major defectiveis a unit of product whid? containSone 0: mre major defects,* may alSO contain rrtiordefecLsbut containsno aiti- defect. Minor Defect. Anbm~ ~t isnot-yto~. materiallythe usabilityof the unit of productfox its int- puzpose~m is e &par&m fran ~ ~WviIgU*~@m tkeffeCtiWUSec operatim of the unit. 3-17. --- Minor - .. Def-i-. A minor defectiveis a unit of P-a M* ~ ~. ox more minor &facts mtamtains no aititi or major *feet.