1、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-c .- (Aiwtion fox capha should be addressed to te American Society for Tesf=Lng and texias, 1916 Race Slmekr Philadelphiar PA 19103), Provided by IHSNot for ResaleNo reproduction or networking permitted
2、 without license from IHS-,-,-MIL-B-18876A (Oc) 3.4 Surface. drawings and specifications, unless othdse stated in the mntract, order, or requisition. 3.5 interchangeability. Al1 parts shall be capable of interchangeable assembly without interferences, binding, or misaligrment. amprising a permanentl
3、y joined unit (as by welding) and the unit thus fo& shall be capable of interchangeable joining in the assanbled unit and assembly. 3.6 Welding. Ail surfaces to be welded shall be thoroughly cleaned and shall be free from grease, paint, or other foreign substances. and welding machines shall qualify
4、 (4.4.1) and conform to the requirerents and tests of this specification, applicable drawings and in accordance with All parts shall be finished as .prescribed on applicable All partc All welding lQL-P-16594. 3.7 Stacking. The amnunition boxes shall be constructed to stack either vertically or horiz
5、ontally. engage inside upper reinforcing band of tk adjacent box. When stack& horizontally, the stacking projection in the middle of the amnunition box shall be on top and shall engage the stacking pocket on the bottcnn side of the adjacent box. binding. (see 4.5.1.4) When stacked vertically, the bo
6、x bottom shall The boxes shall stack readily without forcing or 3.8 Gasket and gasket bearing surface. the cover with an adhesive c-t ir accordance With M-A-121 and the exposed bearing surface shall be coated with talc or graphite to prevent sticking to the bearing surface of the box. of the boxshal
7、l be forred, turned, or otherwise machined to produce a smoth continuous surface which will not injure the gasket during closing or opening of the amnunition box and which is perpendicular to the axis of the box within tolerances specified on applicable drawings. The rim shall not vary mre than 0.03
8、 inches from a plane surface, as determined by a feeler gage with a surface plate resting on gasket bearing surface, to ensure proper seating of the gasket. Gasket shall provide proper sealing at closure of cover, 3.11. 3.9 Cover pads. pregnated in accordance with MIGC-17057. strips, shall be in acc
9、ordance with MW-A-121. The gasket shall be csmmted in The gasket bearing surface Cover pads shall be made of felt sheet, ml, mnpound im Cement, for securing pas to cover 3.10 Plating. Completed dtion boxes and covers shall be galvanized all ovr, inside aqd outside, as specified on applicable drawing
10、s. Gal- vanizing shall be accmplished by the hot-dip process in accordance With ASIM A-386. deposit& in accordance with QD-2-325, Type II, Class 2. All parts of cover not permanently joined may be z”inc electro- 3.11 Airtightness. Boxes shall be capable of withstandirq internal air pressure test of
11、4.5.1.2 without evidence of any structurai weakness or permanent deformation. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-r * * e * * - u* * 4.3.1 F
12、irst article samples. Unless otherwise specified, as soon as practicable after the award of the contractor order, the first tm boxes manufactured by the mthods and eguiPment proposed for the production of the boxes shall be submitted for first article tests to determine can- pliance with the require
13、mentc of the contract, specifications and drawings. Mer production of the boxes by the supplier propr to approval by the procuring activity or the coqletion of the tests on the first article samples shall be at the suppliers risk. First article sample-s accepted will be applied as part of the quanti
14、ty specified by the cofitxact or order, but shall not be used on any equipment mufactwed for the Gcrven-iment. The first article samples shall be forwarded to the COnaMnding Officer, US Naval Weapns Station, Earle, Colts Neck, NJ 07722, Attention: Director, Naval Weapns Handling Laboratory. The firs
15、t article sanp?k shall be plainly identified by securely attached tags marke with the following infomiation: Samples sulrnitted by (name) (date) for first article inspection in accordance with the requirements of MIGB-18876 (Oc). 4.3.2 Vpon completion of the first article inspection, all the applica
16、ble inspection reports and, when applicable, recoai.wiendations and ccamients pertinent for use in monitoring production will be forwarded to the Government quality control representative. 4.4 Quality conformance inspec tion. The quality aonfomce inspection shall consist of the following: a. Qualifi
17、cation of weld process or machine (4.4. i) b. Production control tests (4.,4.3) c. Visual and dimnsional examination (4.4.4, 4.4.4.1) d. Ekamination for preparation for delivery (4.4.4, 4.4.4.2) 4.4.1 Qualification of weld process or machine. machine shall be qualified as outlined in 3.6. The weld p
18、rocess or 4.4.2 Samlina for mmduction control tests. 4.4.2.1 ot size. under essentially the same conditions. Each lot shall consist of units or product manufactured 4.4.2.2 Production control samples. Sampling for production control shall be five butt welds taken at the beginning and end of each shi
19、ft and whenever the electrodes are changed or dressed, or when any changes are made in the control of the machine. during the shift to insure against rejection of production boxes. Pdditional samples may be taken by the supplier 4.4.3 Production contxol tests. Production contxol tests shall be acccs
20、nplished on samples selected as specified in 4.4.2.2 which are representative of the production to determine that the production meets the requirmts of this specification. These tests are detailed in 4.5.1. Acceptance shall be based on no defects in the sample. Failure of the sample to amply with Pr
21、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-7 MIL-B-L7bA 1 M 7999906 0282557 5 m - MIL-B-18 87 6A (OS) 4.5.1.4 Stacking. Test for determining the fulf
22、illrrient of the stack- ing requirements of 3.7 shall be made with the &munition boxes loaded with dunmy amnunition or equivalent. 5. PAcxAGING 5.1 Packaging and packing. 5.1.1 &vel C. damage during direct shipent from the supply source to the first receiving activity. mies or other camon carrier re
23、gulations applicable to the mode of trans- portation. ccsrrpress the Gasket. The box requires no overpack. The boxes shall be packed to afford protection against The packs shall comply with the Uniform Freight Classification The box shall have the cover attached, as not to excessively 5.2 Marking. 5
24、2.1 Normal marking. the contract or order, marking for shipent shall be in accordance with MIGSTD-129. In addition to any special marking required by 5.3 Shipping information. The boxes shall be properly loaded aboard carriers to assure adequate protection froan damage and should comply to ccmmn ca
25、rriers regulations applicable to the mode of transportation. 6. NOIES AND CNCmING MATEKlXL 6.1 Intended use. designed to protect the contents during handling, shipping, and storage. 6.2 rdering data . should s,i?eCify the following: The amnunition box covered by this specification is DD Form 1423 an
26、d other ?elated procurement documents 6.2.1 Procurement recniiremnts. a. Title, number +nd date of this specification b. Quantity c. MARK and MOD designation of box being purchased d. Whether first article inspection is walved (see 4.3.1) e. Exceptions to this specification f. Applicable drawings an
27、d other domrents g. Selection of applicable level of packing (see.5.1) 6.2.2 Contract data reqyiremnts. The item of deliverabl data required by this specification is cited in the following paragraph: Paragraph 4.4 Data requiremmt Report, Test Applicable DID DI-“-2072 The DID (Data Item Description/b
28、D Fom 1664) for the above data requirement is in the DOD Authorized data list (TD-3). Such data will be delivered as identifipd on the above cited DID when specified on DD Form 1423 (Contract Data Rqukenvxt Lists) and incorporated into applicable contracts. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-r Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
