1、MIL-M-60903A (AR)14 May 1986SUPERSEDINGMIL-M-60903(Mu)29 September 1967MILITARY SPECIFICATIONMARKING OF ELECTRICAL WIRES AND CABLESThis specification is approved for use by the U.S. Army Armament,Munitions and Chemical Command, and is available for use by allDepartments and Agencies of the Departmen
2、t of Defense.1. SCOPE1.1 This specification covers the process for marking ofidentification and designations on electrical wires and cables.Marking is normally accomplished by direct hot stamping on theouter insulation or jacket. Alternate methods involving the useof hot-stamped or ink-stamped ident
3、ification tapes and sleeves areused in special applications. The hot-stamped markings are inkedto provide visual contrast and are impressed for permanency.2. APPLICABLE DOCUMENTS2.1 The following documents, of the issue in effect on dateof invitation for bids, form a part of this specification:SPECI
4、FICATIONSMILITARYMIL-I-7444 - Insulation Sleeving, Electric, FlexibleMIL-T-713 - Twine, Fibrous, Impregnated, Lacing andTying(Copies of specifications, standards, drawings, and publicationsrequired by contractors in connection with specific procurementfunctions, should be obtained from the procuring
5、 activity, or asdirected by the contracting officer.)Beneficial comments (recommendations, additions, deletions), and any pertinent data whichmay be of use in improving his document, should be addressed to: Commander, US ArmyArmament, Munitions and Chemical Command, ATTN: AMSMC-QAN-Q(D), Dover, NewJ
6、ersey, 07801-5001, by using the self-addressed Standardization Document ImprovementProposal(DD Form 1426), appearing at the end of this document, or by letter.AMSC N/A FSC: 1195DISTRIBUTION STATEMENT A. Approved for public release; distribu-tion is unlimited.Provided by IHSNot for ResaleNo reproduct
7、ion or networking permitted without license from IHS-,-,-MIL-M-60903A (AR)3. REQUIREMENTS3.1 Designations.3.1.1 General application. The required designations shallbe applied by the method specified on the product drawing usingthe applicable procedure specified herein.3.1.2 Manufacturers designation
8、. When required, manufac-turers code letters will be assigned by the procuring activityand shall be located as shown on the product drawing. In addi-tion, the date code shall be marked by the manufacturer, whenrequired, in accordance with the following system:“A” for January, “B” for February, etc.,
9、 “77” for 1977, “78” for1978. etc. Example: “D78” indicates April 1978 manufacture.3.2 Hot-stamp marking.3.2.1 General information. When hot stamping is specified,the outer jacket or sleeving insulation shall be marked usinginked marking foils designed for the particular material beingmarked. The ma
10、rking shall be impressed to a depth not exceedingone-fourth of the thickness of the material. Markings shall bewhite on black, dark brown, dark blue, dark red, dark green, anddark purple material. Markings on other colors shall be black.Markings on transparent insulation sleeving shall be black exce
11、ptwhen the materials underneath are dark colors listed above, inwhich case the markings shall be white. Unless otherwise speci-fied, markings on white hook-up wires shall be black, Or of acontrast color to white if colored markings are desired tofacilitate production. The use of colored markings sha
12、ll beapproved by the procuring activity prior to being used inproduction.3.2.2 Equipment and accessories.3.2.2.1 Marking machine. Hot-stamp marking machines maybe either manually operated or automatic and shall be capableof marking the various forms of insulation materials at tempera-ture up to 500
13、Fahrenheit (F).2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-60903A (AR)3.2.2.2 Marking foils. Marking foils must be chosen forcompatibility with the materials being marked to effect goodadhesion.3.2.2.3 Type. Type shall consist of vertical
14、capitals ofGothic or similar design. Flat-faced type shall be used formarking on flat surfaces such as on tape and polyvinyl sleeving,and curved-faced type for marking on curved surfaces such as onwires, cables, and sleeving where the type used shall be thelargest size which will produce impressed c
15、haracters on the par-ticular size of material.3.2.3 Procedure. The marking machine shall be fitted withthe correct size type, guide blocks, and foil and then heatedto the proper temperature before marking is begun. The sectionof the insulation to be marked should be well supported andcentered under
16、the type and the surface should be as parallelto the face of the type as possible; otherwise, some of the typemay cut through the insulation before all the characters areprinted. The optimum dwell time and pressure used for each typeand thickness of material shall be determined prior to markingthe p
17、roduction part. (The operation varialbes must be care-fully controlled. A short dwell time of 1 second or less isnormally employed except for nylon insulation which requires adwell time of 1 to 2 seconds. Polyvinyl plastic can be markedat 400 25F. and polyethylene and synthetic rubber insula-tion at
18、 375 25F. Nylon requires a temperature of approxi-mately 450F. Automatic machines may require higher temperaturethan hand-operated machines since shorter dwell times arenormally employed.)3.2.3.1 Hook-up wires. Markings on hook-up wires shallbe of two types as specified on figure 1. Either type may
19、beemployed unless otherwise specified on the product drawing.Type I - Markings shall be applied recurrently along thelength of the wire with at least one markingappearing near each end.Type II - Markings shall be applied twice at each end ofthe wire as illustrated. Markings may in addi-tion appear a
20、t intervals along the length ofthe wire.Markings need not be applied a specific distance from the endof the wire but shall be applied in such a location that thedesignation is readily visible near the end of the wire after3Provided by IHSNot for ResaleNo reproduction or networking permitted without
21、license from IHS-,-,-MIL-M-60903A (AR)FIGURE 14Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-60903A (AR)installation. Wires shorter than three inches, such as jumperwires, need not be marked unless specifically designated on theproduct drawin
22、g. If markings on individual wires in harnessesand cables are not required by the product drawing, and suchmarking would be desirable to facilitate production, manufactur-ing may hot-stamp suitable designations on the wires.3.2.3.2 Cables. - Identification designations on cablesshall be located on t
23、he product drawing and shall consist of adouble marking of the designations as shown on figure 2. Coaxialcables and other manufacturer cables with tight-fitting jacketsshall be hot-stamped directly on the jacket (see 3.2.3.2.1). Wheninsulation sleeving is employed as an outer jacket over a bundleof
24、wires, the markings shall be applied to the flat sleeving be-fore insertion of the wires.3.2.3.2.1 Identification sleeves. - Marking of cables withidentification sleeves (see figure 3) is a special method whichmay, when so specified, be used as an alternate to direct hot-stamping of the outer jacket
25、 if the following conditions exist:(1) on small cables where experience has shown that the thin in-sulation is pierced in the stamping operation, (2) on manufactured,multiconductor cables with extruded insulation where, due to thetwist and insufficient number of conductors underneath, ridgesappear t
26、o such an extent that a satisfactory marking cannot beobtained, and (3) on insulation where properties of the materialare such that a satisfactory direct marking cannot be obtained.Identification Sleeves shall not be used if a satisfactorymarking can be made by direct hot stamping of the outer jacke
27、t.Identification sleeves, when used, shall be made from a suitablelength of polyvinyl sleeving complying with the requirementsof MIL-I-7444. The inside diameter of the sleeve shall be suchas to provide a close fit over the cable jacket. The requireddesignations shall be hot-stamped on the sleeve as
28、indicatedin 3.2.3.2 prior to placing the sleeve over the cable. Onshort cable (eg. feet or less), the identification sleeve mayextend the full length of the cable.3.3 Marking with identification tapes. - Printed identifi-cation tapes shall comply with the requirements of the appropriatespecification
29、 referenced on the product drawing. Tapes shall beapplied directly around the bundle of wires in the indicatedlocations prior to inserting the bundle into the transparent in-sulation sleeving. The tape shall be wrapped one or two turnsaround one conductor then one and one-half to two turns around th
30、ebundle of wires. The required designations shall be ink-stampedor hot-stamped recurrently on the tape at essentially uniformintervals so that the designation will appear at several placesaround the cable. On small cables the minimum number of markingsvisible on the installed tape shall be two, loca
31、ted diametrical-ly opposite. The tape shall be wrapped without spiraling andthe designations shall be entirely legible through the sleeving.5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-N-60903A (AR)ILLUSTRATION OF MARKING ON CABLESFIGURE 26Pr
32、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-60903A (AR)INSTALLATION OF IDENTIFICATION SLEEVEFIGURE 37Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-60903A (AR)3.4 Reworking of markings.
33、3.4.1 Coaxial and multiconductor cables. Markings that havebeen hot-stamped directly on the outer jacket of a cable or on anidentification sleeve may be reworked by hot-stamping the new “dash“number (eg. -01) at the side of the obsolete designation. The olddesignation shall not be removed. The surfa
34、ce of the insulationshall be clean before hot-stamping the new designation. Example:obsolete designation, “123456-00”, reworked designation,“123456-00-01.”3.4.2 Cables with insulation sleeving. In the rework ofcables, where it is not necessary to remove the connector or insu-lation sleeving, rework
35、markings shall be made with identificationtapes (see 3.3). The operation shall be performed by looseningthe clamp and slipping the sleeving back along the bundle of wires.If the obsolete marking is on tape, the old tape shall be removedand replaced with new tape containing the new designation. If th
36、eobsolete marking is hot-stamped on the sleeving, tape printed re-currently with the new “dash” number (eg. -01) shall be appliedaround the wires in proper location to appear beside and under thehot-stamped marking (eg. XXXXXX-XX-01). The hot-stamped markingshall not be removed. If it is necessary t
37、o remove the connectoror sleeving during rework. the rework markings may be made withidentification tapes, by hot-stamping new designations on the oldsleeving in a manner similar to that specified in 3.4.1, or by hot-stamping a new sleeving.3.5 Workmanship. Hot-stamped markings shall be sharp andcle
38、arly defined. The markings shall be applied in such a manneras to be impressed no more than one-fourth the thickness of thematerial and without damage to the insulation. The ink in themarkings shall be adherent. Identification tapes and sleevesshall be neatly applied using good workmanship.4. QUALIT
39、Y ASSURANCE PROVISIONS4.1 Inspection. The marked material shall be checked to as-certain that the markings are impressed to provide a permanent mark-ing and that the insulation has not been damaged in the markingprocess. The adhesion of the ink shall be tested by rubbing the8Provided by IHSNot for R
40、esaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-60903A (AR)thumb over the marking. Slight transfer of ink is allowable; how-ever, the general appearance of the marking shall be essentiallyunchanged by this treatment. The marking shall remain visible byvirtue of its im
41、pression should the ink be removed from the marking.5. PREPARATION FOR DELIVERY5.1 Not applicable.CustodianArmy (AR)Preparing activityArmy (AR)Project No. 1195-A1169Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo repro
42、duction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE OF INACTIVATIONFOR NEW DESIGN INCH-POUNDMIL-M-60903A (AR)NOTICE 321 June 1995MILITARY SPECIFICATIONMARKING OF ELECTRICAL WIRES AND CAB
43、LESThis notice should be filed in front of MIL-M-60903A (AR),dated 14 May 1986MK-M-60903A (AR) dated 14 May 1986, with Validation Notice 2, dated 20 August 1991 is inac-tive for new design and is no longer used, except for replacement purposes.AMSC N/APreparing ActivityArmy-ARFSC 1195DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
