1、3 t J MIL-G-43714D 84 779970b 0441866 3 a i MIL-G-43914D 9 January 1985 SUPERSEDING MIL-G-43914C . . 13 August 1984 MILITARY SPECIFICATION GOGGLES, SUN, WIND AND DUST: 1974 Th,s specification is approved for use by all Departments and Agencies of the Department of Defense. 1, SCOPE 1 1.1 Scope. This
2、 document covers two types of goggles for wear with and without glasses. fc 1.2 Classification. The goggles shall be of two types with the following classes of lenses. Type I - For wear withoutface mask, Class 1 - Clear (non-ballistic) Class 2 - Class 3 - Clear (ballistic) Class 4 - Neutral gray (no
3、n-ballistic) Neutral gray (ballistic) Type II - For wear with face mask. Class 3 - Clear (ballistlc) Class 4 - Neutral gray (ballistic) 2. APPLICABLE DOCUMENTS 2.1 Government documents. Unless otherwise specified, the following docu- ments of the issue in effect on date of invitation for bids or req
4、uest for proposal, form a part of this document to the extent specified herein. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: U.S. Army Natick Research and Development Center, Natick, MA Docum
5、ent Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. 01760-5014 by using the self-addressed Standardization FSC 8465 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-* MIL-G-43724D 4 W 7797706 0443867 5 4 c SPECI
6、FICATIONS FEDERAL L-P-393 L-P-504 JJ-W-155 QQ-B-6 13 CCC-D-950 PPP-B-636 PPP-B-665 PPP-B-676 PPP-T-45 - Plastic Molding Material, Polycarbonate, - Plastic Sheet and Film, Cellulose Acetate - Webbing, Textile, (Cotton, Elastic) - Brass, Leaded and Nonleaded: Flat Products (Plate, Bar, Sheet and Strip
7、) - Dyeing and Aftertreating Processes for Cotton Cloths - Boxes, Shipping, Fiberboard - Boxes: Paperboard, Metal Edged and Components - Boxes, Setup - Tape, Gummed, Paper, Reinforced and Plain, for Injection and Extrusion Sealing and Securing MILITARY MIL-F-495 - Finish, Chemical, Black, for Copper
8、 Alloys MIL-R-3065 - Rubber, Fabricated Parts MIL-F-21840 - Fastener Tapes, Hook and Pile Synthetic MIL-V-43511 - Visors, Flyers Helmet, Polycarbonate STANDARDS FEDERAL FED-STD-191 - Textile Test Methods FED-STD-406 - Plastic, Methods of Testing MILITARY MIL-STD-105 - Sampling Procedures and Tables
9、for Inspection by Attributes MIL-STD-129 - Marking for Shipment and Storage MIL-STD-130 - Identification Marking of US Military Property MIL-STD-147 - Palletized Unit Loads DRAWINGS US ARMY NATICK RESEARCH AND DEVELOPMENT CENTER 8-2-635 - Goggles, Sun, Wind andDust: 1974 (Type I) 8-2-636 - Head Band
10、 Assy. (Type I and II Goggles) 8-2-637 - Frame (Type I Goggles) 8-2-638 - Lens (non-ballistic), Class 1 and Class 2 8-2-639 - Foam Pad (Type I and II Goggles) 8-2-640 - Flannelette Cloth, Top (Type I and II Goggles) 8-2-641 - Flannelette Cloth, Bottom (Type I and II Goggles) 2 Provided by IHSNot for
11、 ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-4373LlD 84 a 7779306 0443868 7 -a MIL-G-43914D . 8-2-664 - Lens (ballistic), Class 3 and Class 4 8-2-827 - Goggles, S.un,Wind and Dust: 1974 (Type 11) 8-2-828 - Frame (Type II Goggles) 8-2-829 - Fastener, (Hook), Upper
12、 and Lower (Copies of documents .required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Other publications. Unless otherwise specified, the following docu- ments of the issue in effe
13、ct on date of invitation for bids or request for proposal, form a part of this document to the extent specified herein. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 2000 - Rubber Products in Automobile Applications D 3951 - Standard Practice for Commercial Packaging . Testing and Materials, 1
14、916 Race Street, Philadelphia, PA 19103.) (Application for copies should be addressed to the American Society for (Technical society and technical association documents are generally avail- They are also distributed among technical able for reference from libraries. groups and using Federal agencies
15、. ) fc 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document shall take precedence, 3. REQUIREMENTS I 3.1 First article. When specified, a sample shall be subjected to first article inspection (see 4.3, 6.2 an
16、d 6.4), 3.2 Materials (see 6.5) and components. I 3.2.1 Rubber. The frame for the goggles shall be molded of a rubber com- , I . pound having polychloroprene as a base material and shall meet the require- ments of type, class, grade and suffix letters, M3BC 710 A14 G21 of ASTM 2000. 3.2.2 Plastic 3.
17、2.2.1 Non-ballistic (classes 1 and 2). The plastic sheet used for the lenses (see-3.41, shall be clear or neutral gray cellulose acetate or cellulose acetate butyrate. The cellulose acetate or the cellulose acetate butyrate shall be of optical quality, uniform and of a construction necessary to prod
18、uce lenses meeting the requirements of this document. The cellulose acetate and the cellulose acetate butyrate shall meet the optical requirements 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-Ll3714D 84 W 3777906 OLl4Lb7 7 MIL-G-43914D for
19、 the type III nominal 0.060 inch thick material specified in L-P-504, except that the luminous transmittance for class 2 lens shall. be 15 to 30 percent. 3.2.2.2 Ballistic (classes 3 and 4). Thematerial for the ballistic lenses shall be fabricated from clear or neutral gray bisghenol type polycarbon
20、ate plastic molding material conforming to L-P-393. 3.2.3 Webbing. The elastic webbing for the headband shall conform to type . I, class 3 of JJ-W-155, except that the webbing shall be mildew resistant treated and the fungicide content shall be 0.5 percent to 1 percent based on the cotton component
21、of the webbing only. The color of the webbing shall. be Olive Drab 7. fi 3.2.3.1 Dipping compound. The ends of elastic webbing for the headband shall be dipped in a cellulose acetate or cellulose acetate butyrate in suitable organic solvent having a concentration of 25 to 28 percent solids to u dept
22、h of 5/8 5 1/8 inch and allowed to dry (see 6.8). 3.2.4 Cloth. The cloth for the filtering screen shall be a commercial cotton flannelette dyed black with direct colors and napped on one side only. The cloth shall have.a minimum weight of 4.0 ounces per square yard and a minimum texture of 42 ends p
23、er inch and 40 picks per inch when tested as specified in 4.4.1.1. . 3.2.4.1 Mildew resistance. The mildew resistant treatment of the cotton flannelette shall conform to CCC-D-950, except that the inhibitor “a“ fungicide content shall be 0.5 percent to 1.0 percent and shall meet the requirements app
24、lied to inhibitor “a“, and that the soil burial test shall not aPP 1Y 0 3.2.4.2 Adhesive for attaching flannelette. The adhesive used in attaching the flannelette to the rubber frame of the goggles shall be 3Ms Adhesive EC 1300L or equal. The adhesive shall be applied in such a manner that the flann
25、elette will not peel when tested for peel strength as specified in 4.4.4.4. 3.2.5 Foam pad. The foam padding on the goggles shall be a 3/8 inch thick polyether polyurethane foam, open cell, having a density of 1.40 2 0.20 pounds per cubic foot. The foam shall be gray in color, and possess nominal 55
26、 pores per inch with a minimum of 35 pores per inch and a maximum of 75 pores per inch, A black polyurethane skin, 2 mils thick, shall be adhered to one side of the foam only. The skin shall not be capable of being peeled without tearing the foam when tested as specified in 4.4.1.1. (see 6,6), 3.2.5
27、.1 Adhesive for attaching foam. The adhesive used in attaching the foam to the goggles shall be 3Ms Adhesive EC 1300L or equal. The adhesive shall be applied in such a manner that the foam cannot be separated from the goggles without tearingthe foam when tested as specified in 4,4.4.4. 4 Provided by
28、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-43714D 84 7777906 0443870 5 W . MIL-G-43914D 3.2.6 Metal components. , . 3.2.6.1 Snap fasteners. The snap fasteners shall be brass, any composition conforming to QQ-B-613. be United-Carry Inc., number or equ
29、al: Button No. 21154, 16 line size; Socket No. 22201; Stud No. 22303; Eyelet No. 22402. The following components of the snap fastener shall 3.2.6.2 Slide, 3/4 inch. The slides shall be hard brass conforming to QQ-B-613, any composition and shall conform to Waterbury Buckle Company No. 164, or equal.
30、 3.2.7 Finish. All metal parts shall be given a black chemical finish con- forming to MIL-F-495, 3.2.8 Fastener hook tape (for type II goggles). The fastener hook tape for the type II goggle shall conform to type I; class 2, color green 3421 of MIL-F-21840 and shall conform to Drawing 8-2-829. Two s
31、trips of the hook tape shall be stitched together lengthwise to form a sufficiently wide hook strip from which to cut the piece to be adhered to the lower goggle. 3.2.8.1 Adhesive for attaching the fastener hook tape. The adhesive to be used in attaching the fastener hook tape pieces to the goggle f
32、rame shall be 3Ms adhesive EC 1300 L or equal. The adhesive shall be applied in such a manner so that there is no delamination of more than 1/8 inch when tested as specified in 4.4.4.4 (see 6.6). 33 Design and construction. fc 3.3.1 Design. The goggles shall be designed to provide binocular vision,
33、to hold the interior of the lens a sufficient distance from the eyes to allow adequate clearance for eyeglasses and to provide circulation of air to the interior of the goggles. The goggles shall be fitted with a urethane foam pad in the area of contact with the face and cloth filtering screens over
34、 ventilating holes. The type II goggle frame shall have extensions in the nose, cheek and forehead areas to which fastener tape pieces have been adhered as shown on Drawing 8-2-827. 3.3.2 Construction. The goggles shall be constructed as shown on drawings referenced in 2.1. to 3.2.4 shall be cemente
35、d to the frame with the adhesive specified in 3.2.4.2. The foam pad conforming to 3.2.5 shall be cemented to the frame using the adhesive specified in 3.2.5.1. The foam pad shall be cemented on the non-skin side to the inside (see section A-A in Drawing 8-2-635 and Drawing 8-2-827) of the rubber fra
36、me. The width of the urethane foam shall correspond within 2 1/8 inch to the width of the rubber facing. The open area required for the temple when spectacles are worn with the goggles shall be fully covered with the urethane foam as shown on Drawings 8-2-635 and 8-2-827. The urethane foam shall not
37、 extend into the area of vision. The ends of the webbing for tie headband (see 3.2,3), shall be dipped in resin conforming to 3.2.3.1 to prevent unraveling. The napped side of the filtering screen cloth conforming The fastener hook tape pieces for the type II 5 Provided by IHSNot for ResaleNo reprod
38、uction or networking permitted without license from IHS-,-,-NIL-G-LI3714D 4 777770b 04LiL7L 7 MIL-G-439 14D goggles shall be adhered as shown on Drawing 8-2-827 with the cement specified in 3.2.8.1. * 3.3.3 Goggles complete. 3.3.3.1 Type I. The type I goggles shall be furnished with class 1 and 2 le
39、nses or class 3 and 4 lenses as specified (see 6.2). A clear lens shall. be inserted in the frame. 3.3.3.2 Type II. The type II goggles shall be furnished with class 3 and 4 lenses (see 6.2). The goggles shall be furnished without a lens inserted in the frame. 3.4 Lenses (see 32.2). 3.4.1 Class 1 an
40、d 2 lenses. The class 1 and 2 lenses shall be blanked or cut to shape and size shown in Drawing 8-2-638. The thickness shall be not less than 0,026 or more than 0.038 inches. The shape of each ens shall be such that when inserted in the frame, the lens shall conform to the curvature of the frame and
41、 fit snuggly therein. 3.4.1.1 Color (class 2 only). The color of the lens shall be essentially . neutral gray having the following trichromatic characteristics when tested as specified in 4.4.2.3 (see 6.3): Percent YT = 15 percent to 30 percent x = 0.270 to 0.350 y = 0.300 to 0.380 3.4.1.2 Optical q
42、ualities. The class 1 and 2 lenses shall show no distortion and shall.be optically clear when visually examined as specified in 4.4.2.1. A 3:4.2 Class 3 and 4 lenses. The class a thickness of 0.080 2 0,001 (see Drawing resistant coating, and shall conform to c following exceptions: 3 and 4 ballistic
43、 lenses shall have 8-2-664), shall have an abrasion ass 1 and 2 of MIL-V-43511 with the a. Design and dimensions. The design and dimensions of the lenses shall be in accordance with Drawing 8-2-664. b. Areas of vision. All vision areas of the lenses shall be considered critical except.the outer peri
44、phery of the lens 1/4 inch in from * the edge (see Drawing 8-2-635). The center point for the left and right optics shall be identified as point “C“. The location of point “C“ shall be as shown in Drawing 8-2-664. The numbered circles within the critical areas ar.e designated as points of choice for
45、 prismatic and distortion tests. Points 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-43914D 84 9979906 0441872 9.- MIL-G-43914D bearing the same number, for example 5R and 5L, shall. be compared with each other, except points 2R and 2L sha
46、ll be-compared with point 3 when measuring refractive power or prismatic deviations, 3.5 Marking. Each frame shall be permanently and distinctly marked with the information shown in Drawing 8-2-637, in the location shown, and in accordance with MIL-STD-130. 3.6 Workmanship. The frame, lenses and the
47、 respective components shall conform to the quality of product established by the document. The occurrence of defects shall not exceed the applicable acceptable quality levels. 4, QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase o
48、rder, the contractoris responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection require- ments specified h
49、erein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the document where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 Certificate of compliance. Where certificaees of compliance are submitted, the Government reserves the right to check test such items to determine the validity of the certification. 4.2 Classifi
