1、1. SCOPE MIL-H-2461bA 9999906 1973423 858 = (INC“D( MIL-H-24616A(SH) 03 March 1994 SUPERSEDING 26 January 1983 (See 6.10) MIL-H-24616(SH) MILITARY SPECIFICATION HELMET, NAVAL SHIPBOARD (MK 5 MOD O) This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and i
2、s available for use by all Departments and Agencies of the Department of Defense. 1.1 Scope. This specification covers the ballistic protective shipboard helmet, MK 5 MOD O, which consists of a ballistic shell, impact liner, suspension frame assembly, and chin strap assembly. 1.2 Classification. The
3、 helmet is of one size and of the following types, as specified (see 6.2): Type I - General use. Type II - Phonetalker. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications. standards, and handbooks. The following specifi- cations, standards, and handbooks form a part of this docum
4、ent to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). Beneficial comments (recommendations, a
5、dditions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, SEA 03R42, Naval Sea Systems Command, 2531 Jefferson Davis Hwy, Arlington, VA 22242-5160 by using the self-addressed Standardization Document Improvement Proposal (DD Form 14
6、26) appearing at the end of this document or by letter. 0 AMSC N/A FSC 8470 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-24hLhA 999Oh 3973424 794 f SPECIFICATI
7、ONS FEDERAL V-T-295 KK-L-254 MMM-A-1617 PPP - B - 26 PPP- B- 636 PPP-C- 843 MILITARY MIL-T-5038 MIL-C-5040 MTL-P-12420 MIL-P-19644 MIL-P-24441 MIL-P-24441/1 MIL-P-24441/2 MIL-S-44091 MIL- P - 46 59 3 STANDARDS FEDERAL FED-STD-595 FED-STD-751 MILITARY MIL-STD-129 MIL-STD-147 MIL-STD-662 - Thread, Nyl
8、on. - Leather, Sheepskin, Chrome Tanned. - Adhesive, Rubber Base, General Purpose. - Bag, Plastic, (General Purpose). - Boxes, Shipping, Fiberboard. - Cushioning Material, Cellulosic. - Tape, Textile and Webbing, Textile, Reinforcing, - Cord, Fibrous, Nylon. - Plastic Material, Cellular, Elastomeric
9、. - Plastic Molding Material (Polystyrene Foam, - Paint, Epoxy-Polyamide General Specification for. - Paint, Epoxy-Polyamide, Green Primer, Formula 150, - Paint, Epoxy-Polyamide, Exterior Topcoat, Haze - Strap, Chin, Ground Troops? - Parachutists? Helmet. - Projectile, Calibers .22, .30, .50 and 20
10、mm Nylon. Expanded Bead). Type I. Gray, Formula 151, Type I. Fragment-Simulating. - Colors Used in Government Procurement. - Stitches, Seams, and Stitchings. - Marking for Shipment and Storage - Palletized Unit Loads. - V50 Ballistic Test for Armor. (Unless otherwise indicated, copies of federal and
11、 military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, BLDG. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1.2 Other Government documents. drawings. and Publications. The following other Government documents, drawings, and publicatio
12、ns form a part of this document to the extent specified herein. are those cited in the solicitation. Unless otherwise specified, the issues DRAWINGS NAVAL SEA SYSTEMS COMMAND (NAVSEA) 803-6397308 - Helmet, PhoneTalker, MK 5, MOD O, General Assembly. 803-6397310 - Helmet, Shipboard, Battle, MK 5, MOD
13、 O. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-2461bA m 99999Ob 1973425 b20 m (Application for copies should be addressed to: Commander, Portsmouth Naval Shipyard, Code 202.2, Portsmouth, NH 03801.) 2.2 Non-Government Dubications. The fo
14、llowing document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the
15、DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) 289.1 - Protective Headwear for Industrial Workers - Requirements. Z90.1 - Specifications for Protective Headgear for Vehicular Users. (Application for copies should be addressed
16、to the American National Standards Institute, 1430 Broadway, New York, NY 10018.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 635 - Standard Test Method for Rate of Burning and/or Extent and Time of Burning of Self-supporting Plastics in a Horizontal Position. (DoD adopted) Styrene (ABS) Pla
17、stics. (DoD adopted) D 1788 - Standard Specification for Rigid Acrylonitrile-Butadiene- D 3951 - Standard Practice for Commercial Packaging. (DoD adopted) (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (Non-Go
18、vernment standards and other publications are normally available from These documents also the organizations that prepare or distribute the documents, may be available in or through libraries or other informational services.) 2.3 Order of precedence. In the event of a conflict between the text of th
19、is document and the references cited herein (except for related associated detail specifications, specifications, specification sheets or MS standards), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exempti
20、on has been obtained. 3. REQUIREMENTS 3.1 Standard sample. Samples of the helmet or components, when furnished, are solely for guidance and information to the contractor (see 6.5). from this document may appear in the sample, in which case this document shall govern. Variations 3.2 First article. Wh
21、en specified (see 6.2), a sample shall be subjected to first article inspection (see 6.4) in accordance with 4.3. The contractor shall conduct first article testing prior to production to verify that the acquired helmet will meet the requirements of this specification. The contractor is responsible
22、for instrumentation, pre-production tests, and any other procedure or item required to perform the first article inspection. e 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-24bLbA 0b L7342b 567 m MIL-H-24616A(SH) 3.3 Materials and component
23、s. Materials and components shall be in accordance with NAVSEA 803-6397308 and 803-6397310, as applicable, and as Specified herein (see 6.6). Material must withstand frequent exposure to sea water and salt atmosphere, and meet all of the requirements of these descriptions. Aluminum shall not be used
24、 for any components. Wherever color black is specified, it shall be color number 37038 in accordance with FED-STD-595. 3.3.1 Standard configuration of the Helmet. (MK 5 MOD O). The configuration of the helmet is shown on figures 1 and 2. 3.3.2 Components. The Helmet, (MK 5 MOD O), shall contain the
25、following major components : (a) Helmet shell with impact liner. (b) Suspension frame assembly. (c) Chin strap assembly (chin strap, buckle assembly, quick-release buckle/snap assembly). (d) Metal posts and nylon screws. 3.3.3 Helmet shell. The helmet shell shall be fabricated using a ballistic fabr
26、ic that meets all of the requirements specified herein. The inner and outer surfaces shall be wrapped with a fully saturated layer of fiberglass cloth. 3.3.3.1 Paint. The external surface shall be finish coated with an epoxy paint system in accordance with MIL-P-24441 consisting of a primer coat, co
27、lor green, in accordance with MIL-P-24441/1; a top coat, haze gray, in accordance with MIL-P-24441/2, with aggregate; and a second topcoat of haze gray color without aggregate. 3.3.3.1.1 accuracy of dimensions; thoroughness of painting; alignment of parts and tightness of assembly screws, shall be t
28、horoughly cleaned of all foreign material. and so forth. The helmet 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-29bLbA = 9999906 l1973q30 T8 W 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified i
29、n the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) 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 pe
30、rformance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requi
31、rements. 4.1.1 Responsibilitv for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification
32、 shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of the manufacturing operations, is an acceptable practice to ascertain conformance
33、to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: (a) First a
34、rticle inspection (see 4.3). (b) Quality conformance inspection (see 4.4). 4.3 First article inspection. Unless otherwise specified (see 6.4), five assembled helmets and five helmet shells without the paint shall be examined and tested by a Government approved commercial laboratory or a Government l
35、aboratory as specified by the contracting activity. The Government reserves the right to have a representative present during first article testing. The five helmet shells without the paint shall be examined for visual defects and the defects shall be classified in accordance with table II. The five
36、 completed helmet assemblies shall be examined for visual defects and the defects shall be classified in accordance with table III. The helmet assemblies shall then be tested or examined in accordance with the inspections in table I. If one of the helmet assemblies fails any test specified in table
37、I, the helmets represented for first article inspection shall be rejected (see 6.4). 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.4.3 4.7.3 3.4.1 4.7.1 flIL-H-24bLbA W 999990b 3973433 924 MIL-H-24616A(SH) TABLE I. InsDection. Examinations 1 Fi
38、rst article sample size Requirement method I Test Quality conformance sample size Use “major“ from table V Use “major“ or “minor“ as appro- priate with table V Two shells from each mold Dimensional examination of helmet shell Visual examination of helmet shell All five helmet shells Visual examinati
39、on of end item Weight examination of end item 4.6.1 4.6.2 All five helmets All five helmets Every helmet (100 percent of lot) Use “major“ from table V Water immersion One shell fron each mold Helmet shell /Il Ballistic resistance Helmets Il that is, sharp, uneven, jagged, or hanging fibers Any fabri
40、c fibers visibly cut or raised on the shell body X x Any delamination, pimple, or blister Any evidence of cracking or crazing X X Any evidence of dry spot, any area of nonresin flow, or other molding deficiency Any raised pleat, wrinkle, or crease longer than 1/2 inch but less than 1 inch Any hole (
41、other than required for assembly of suspension system to shell), crack, chip, soft spot, blister, or void Any surface dent, depression, or area not smooth which does not seriously affect appearance or serviceability X X lx hny shell not fully wrapped in fiberglass 9ny raised pleat, wrinkle, or creas
42、e 1/2 inch or less in length that is not smooth 10 Minor X X Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-24bhbA = 9999906 1973433 7T7 MIL-H-24616A(SH) ,Any repair or reworking TABLE II. Classification of visual defects of helmet shall prior
43、 to amlication of paint - Continued. I I I Defect incomplete or uneven paint finish Finish wet or tacky to the touch Aggregate omitted Examine Helmet shell (exterior and interior) Continued Major Minor X X X Defect Raised pleat, wrinkle, or crease 1/2 inch or more in length that is not smooth Any ra
44、ised pleat, wrinkle, or crease 1 inch or longer Classi Major X X X Eication Minor TABLE III. Visual defects of end item. Examine :inich on exterior, interior, of completed helmet Aggregate not uniformly distributed Aggregate overrun extending beyond edge onto interior surface of he het Coating furro
45、ws, flakes, or peels (when assembly is scratched with fingernail) Blemish, such as peeling, blistering, or flaking Not a smooth, uniform coating; that is, run or sag affecting an area more than 1 square inch Foreign matter imbedded in or appearing on the finish, such as dirt, stain, oil, or grease X
46、 X X X X X Color of finish not as specified I I Any repair or rework 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-24bLbA 9999906 1973434 b33 9 MIL-H-24616A(SH) TABLE III. Visual defects of end item - Continued. Examine Leather Frame lardw
47、are Any snap fastener, eyelet, Zhinstrap assembly Defect Cut, hole, or tear Finish flaky, peeling, or cracked Grain surface of leather not facini outside Deep scratch or abraded area Color not as specified Any malformation or dimension not as specified Color not as described or not uniform 4ny sharp
48、 edge or burr 4ny hole (other than required for assembly of suspension system to shell), crack, chip, soft spot, blister, or void Broken or malformed, corroded, sharp edge, or burr Any component improperly installed causing failure to serve intended purpose Dimension or material not as specified Pai
49、nted components: any flaking or peeling, sags, runs, or scratches exposing base material or grommet insecurely clinched or peened to the degree that separa- tion may occur from the assembly Any snap fastener, eyelet, or grommet excessively clinched or peened to the degree that materials are damaged Yraj OK X X X x X X X X X X X X qinoi - X 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
