1、INCH-POUND MIL-DTL-32160 05 May 2004 DETAIL SPECIFICATION COVER, REVERSIBLE, ADVANCED COMBAT HELMET This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This document covers the requirements for the reversible helmet cover that is w
2、orn over the Advanced Combat Helmet (ACH). 1.2 Classification. The reversible helmet cover will be one type in the following classes as specified in 6.2. Class 1 Without Communications Flap Class 2 With Communications Flap 1.3 Schedule of sizes. The helmet cover will be constructed in the following
3、sizes (see 6.2). SCHEDULE OF SIZES Small/Medium Large/Extra-Large 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended fo
4、r additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government Doc
5、uments2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the solicitation or contract (see 6.2). Comments, su
6、ggestions, or questions on this document should be address to: Defense Supply Center Philadelphia, Clothing and Textiles Directorate, Attn: DSCP-COET (Bldg 6), 700 Robbins Ave., Philadelphia, PA 19111-5092 or emailed to james.heimandla.mil. Since contact information can change, you may want to verif
7、y the currency of this address information using the ASSIST online database at www.dodssp.daps.mil . AMSC N/A FSC 8415 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32160 FEDERAL SPECIFICATIONS V-T-295 - Thread, Nylon COMMERCIAL ITEM DESCRI
8、PTIONS A-A-50199 - Thread, Polyester Core, Cotton or Polyester-Covered A-A-55126 - Fastener Tape, Hook and Loop, Synthetic DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-C-44031 - Cloth, Camouflage Pattern: Woodland, Cotton and Nylon MIL-C-44034 - Cloth, Twill, Camouflage Pattern, Cotton and Nylon for Des
9、ert Uniform MIL-DTL-32072 - Thread, Polyester MIL-DTL-32075 - Label: For Clothing, Equipage, and Tentage, (General Use) (Copies of documents are available online at http:/assist.daps.dla.mil/quicksearch/ or www.dodssp.daps.mil or from the Standardization Documents Order Desk, 700 Robbins Avenue, Bui
10、lding 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solici
11、tation or contract. DRAWINGS U.S. ARMY RESEARCH, DEVELOPMENT AND ENGINEERING COMMAND, NATICK SOLDIER CENTER 2-1-1516 - 4 Color Woodland Pattern 2-1-2240 - 3 Color Desert Pattern (Copies of drawings, publications, and other Government documents required by contractors in connection with specific acqu
12、isition functions should be obtained from the contracting activity.) 2.3 Non-Government standards and other publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents are those cited in the solicitation o
13、r contract (see 6.2). AMERICAN SOCIETY FOR QUALITY ASQC Z1.4 - Sampling Procedures and Tables for Inspection by Attributes (Copies of documents are available online at www.asq.org or from the American Society for Quality Control, 611 East Wisconsin Avenue, Milwaukee, WI 53202.) AMERICAN SOCIETY FOR
14、TESTING AND MATERIALS (ASTM) ASTM D-6193 - Test Method for the Standard Practice for Stitches and Seams (Copies of documents are available on line at www.astm.org or from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19426-2959.) AMERICAN ASSOCIATION OF
15、 TEXTILE CHEMISTS AND COLORISTS (AATCC) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32160 AATCC - Technical Manual (Copies of documents are available on line at www.aatcc.org or from the American Association of Textile Chemists and Colo
16、rists, P.O. Box 12215, Research Triangle Park, NC 27709-2215.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services.) 2.4
17、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 takes precedence. Nothing in this document however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3
18、.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection (see 4.2 and 6.3). 3.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided
19、 that the material meets or exceeds the requirements of this document and promotes economically advantageous life cycle costs. 3.3 Design. The helmet cover is reversible and can be worn in both desert and woodland environments. The cover is designed to fit over the Advanced Combat Helmet (ACH). The
20、cover provides the helmet with signature reduction in the visible and near infrared spectral ranges, which provides against detection by visual observation or through passive night vision devices. The cover also provides noise reduction (softening noise if the helmet strikes an object). The cover co
21、ntains buttonholes that allow for the attachment of indigenous plant material and other camouflage enhancing aids. The Class 2 cover has a communications flap in the rear. The communications flap is used to store cables from the headset-microphone that is sometimes used with the helmet. Figure 1 is
22、an illustration of the communications flap to supplement the information in the patterns. 3.3.1 Basic material. The basic cloth for the reversible camouflage cover shall be 50%/50% nylon/cotton blend twill as specified in MIL-C-44031, Class 1 for the woodland side and MIL-C-44034, Class 3 for the de
23、sert side, unless otherwise specified in this document. The cloth shall be desert pattern on the face side and woodland pattern on the reverse or back (see 6.5). 3.3.1.1 Pattern execution. The four color woodland camouflage shall be in accordance with drawing number 2-1-1516 and accurately match the
24、 Light Green 354, Dark Green 355, Brown 356 and Black 357 shades on one fabric side. The three-color desert pattern shall be in accordance with drawing number 2-1-2240 and accurately match Light Tan 492, Light Brown 493 and Light Khaki 494 on the opposite fabric side. 3.3.1.2 Spectral reflectance. T
25、he woodland pattern print finished cloth shall meet the spectral reflectance values (in percent) for the visible/near infrared wavelength range, 600 to 860 nanometers (nm) for the colors specified in Table I, when tested as specified in 4.4.6. The desert pattern print finished cloth shall meet the s
26、pectral reflectance values (in percent) for the visible/near infrared wavelength range, 700 to 860 nanometers (nm) for the colors specified in Table I, when tested as specified in 4.4.6 (see 6.5). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL
27、-DTL-32160 TABLE I - Spectral reflectance. Infrared Reflectance Requirements (Woodland) Wavelength Black 357 Light Green 354 Dark Green 355 Brown 356 (nanometers) Min Max Min Max Min Max Min Max 600 - 10 8 20 3 10 3 9620 - 10 8 20 3 10 3 9 640 - 10 8 20 3 10 3 9660 - 10 8 20 3 12 3 12 680 - 10 10 22
28、 3 14 3 14700 - 10 12 33 5 18 4 18 720 - 10 16 45 7 18 4 20740 - 10 20 50 10 20 4 24 760 - 10 24 55 14 30 6 24780 - 10 32 60 20 38 6 30 800 - 10 36 60 24 42 8 30820 - 10 38 66 28 48 8 36 840 - 10 38 68 34 54 8 40860 - 10 40 70 40 60 8 48 Infrared Reflectance Requirements (Desert) Wavelength Light Ta
29、n 492 Light Brown 493 Light Khaki 494 (nanometers) Min Max Min Max Min Max 700 34 53 19 41 25 44 720 34 54 20 41 25 45 740 36 55 20 42 25 46760 38 56 21 42 26 47 780 40 57 21 42 27 48800 40 58 22 43 28 50 820 43 59 23 45 30 52840 44 62 24 46 33 55 860 46 65 25 48 36 583.3.1.3 Colorfastness. The fini
30、shed camouflage printed cloth shall show fastness to light (after 40 AATCC standard fading hours or 170 Kilojoules); laundering (after 3 cycles); and perspiration (acid and alkaline) and crocking. For lightfastness and perspiration, the colorfastness of the cloth shall be equal to or better than the
31、 standard sample, or equal to or better than a rating of “3-4” using the AATCC Gray Scale for Color Change and a rating of “3-4” using the AATCC Gray Scale for Staining for each of the colors, except the Black 357 which shall have an equal to or better than a rating of “2-3”. For laundering, the col
32、orfastness of the cloth shall be equal to or better than the standard sample or equal to or better than a rating of “3-4” on the AATCC Gray scale for color change and equal to or better than the standard sample or equal to or better than a rating of “2-3” using the AATCC Gray scale for staining. Onl
33、y the stain on the nylon and cotton fibers of the color transfer shall be evaluated for stain. The woodland pattern print shall have a colorfastness to crocking rating when using the AATCC Chromatic Transference Scale Rating equal to or better than 2.0 for all colors except Black 357, which shall ha
34、ve a rating not lower than 1.0. The desert pattern print shall have a colorfastness to crocking rating when using the AATCC Chromatic Transference Scale Rating equal to or better than 3.5 for all colors. Colorfastness shall be tested in accordance with 4.4.5. 4 Provided by IHSNot for ResaleNo reprod
35、uction or networking permitted without license from IHS-,-,-MIL-DTL-32160 3.3.2 Fastener tape, hook and loop. The hook and loop fastener tape for the retaining tabs and communications flap shall be 5/8-inch wide and conform to Type II, Class 1 of A-A-55126. The color of the tape shall be Camouflage
36、Green 483 and Light Tan 492. 3.3.3 Thread. The thread shall conform to either A-A-50199, Type I or Type II size 50/2 for the needle and looper (bobbin) or size B of V-T-295, Type I or II, Class A, Thread Nylon or MIL-DTL-32072, Type I or II, Class 1, Thread Polyester. As an alternative for looper (b
37、obbin) thread size 70/2 or size AA may be used. The buttonhole thread shall be size 50/2 of A-A-50199, Type I or II or Size B of V-T-295, Type I or II, Class A or size B for both camouflage (woodland and desert) sides. All thread shall be non-staining and show good colorfastness to laundering when t
38、ested according to AATCC-61, Test 3A (4 cycles). The thread color shall be Camouflage Green 483 and Light Tan 492 and white. 3.4 Construction3.4.1 Stitches and seams. All the stitching and seam types shall conform to ASTM D-6193 and the stitch and seam types listed in Table II. Each row of stitching
39、 shall be straight and parallel to the seam. The thread tension shall be maintained so that there shall not be any loose or tight stitching and the lock shall be embedded in the materials sewn together. No seam or component shall be twisted, puckered, or pleated and no part of the helmet cover shall
40、 be caught in an unrelated operation or seam. All material shall be clean finished. The edges shall be turned in, turned under, or surged. Seams shall be sewn such that there are no raw edges, run-offs, or open seams. All seams shall start and finish evenly. To maintain durability and functionality
41、the seams shall be sewn with 10-14 stitches per inch for all outside visible stitching. Overedging shall be 16-18 stitches per inch. The edge and topstitching shall be uniformly gauged. Stitch gauge (the distance from stitch to edge of fabric) shall be a minimum of 1/16-inch for the hook and loop fa
42、stener tape and the label. The stitch gauge for all other edge stitching shall be a minimum of 1/8-inch. 3.4.2 Manufacturing requirements. Unless otherwise specified, the helmet cover shall be manufactured by and with the use of the requirements specified in Table II. TABLE II Construction. Operatio
43、n Seam Type Stitch TypeOverall general stitching, edge stitching 1/ SSa-1 301 Side Crowns (2) to center crown 1/ LSc-2 301 or 401 Front facing to back facing 1/ LSc-2 301 or 401 Outside edge facing (serging) 1/ EFd-1 502, 504, 505 Facing to cover unit, stitched with overedging on desert side 1/ a. f
44、acing seam edge (serging) b. topstitching on seam LSq-2: SSa-1 topstitch 502, 504, 505, 301 For tabs, join hook/loop side by side, and then fold in half lengthwise 2/ Stitch tabs to facing so that each side of the tab straddles the facing. 4/ SSa-1 with topstitching 3/ or LSa-1 with topstitching 3/
45、Bartack full width of tab 301 301 301 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32160 TABLE II Construction. - Continued Operation Seam Type Stitch TypeButtonhole 1/ a. Facing b. Crown/side crown 5/ 5/ 301 301 Label if sewn 6/ LSbj-1
46、(Box) 301Communications Flap Facing to Center Crown 1/ a. 1-7/8 inch x 2-7/8 inch finished main opening SSc 301 Communications Flap to Center Crown 1/ a. 4 inch flap b. Tuck top portion of flap to 2-1/2 inch width c. Attach flap 7/ EFb - LSbj-1 301 - 301 Communications Flap loop to communications fl
47、ap 1/ LSbj-1 301 Communications Flap hook to Crown/Communications Flap Facing 1/ LSbj-1 301 1/ Using tan thread on desert camouflage side and green thread on woodland camouflage side. 2/ Use green thread. 3/ Topstitch sides of hook and loop rectangle. 4/ Using coordinating thread, i.e. light tan if
48、light tan hook and loop is used and camouflage green thread is camouflage green hook and loop is used. 5/ Buttonhole shall be stitched with no empty gaps kept to a minimum and no fraying. Stitches shall be lockstitched. 6/ Using white thread on the label side and green thread on the woodland side. S
49、titch close to label edge on all four sides. 7/ Topstitch flap at 2-1/4-inch finished width 2-1/4 inch down from top. Place small bartack or backstitch reinforcement at end of topstitch. Finish with boxstitch (2-3/8 inch x 1/2-inch) on top portion of facing using 301 stitch. 3.4.3 Figure. Figure 1 is furnished for information purposes only. When inconsistencies exist between the written specification and the figure, the written specification shall govern. 3.4.4 But
