1、Y 12 June i981 SUPERSEDING MIL-C-43737A 15 February 1974 MILITARY SPECIFICATION CASE MAINTENANCE EQUIPMENT, SMALL ARMS, M16A1 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for the de
2、sign, materials and fabrication of a case or carrying maintenance equipment for the M16A1 Rifle. 2 APPLICABLE DOCUMENTS * 2.1 Issues of documents. The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent s
3、pecified herein. SPECIFICATIONS FEDEKALI V-T-285 - Thread, Polyester UU-P-268 - Paper, Kraft, Wrapping DDD-L-2 0 - Label: For Clothing, Equipage, and Tentage, PPP-B-636 - Boxes, Shipping, Fiberboard (General Use) Y Beneficial comments (recommendations, additions, deletions) and any pertinent data wh
4、ich may be of use in improving this document should be addressed to: US Army Natick Research and Development Laboratories, Natick, ;MA 01760 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this docu- ment or by letter. FSC 8465 Provide
5、d by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-P;. . _- 3 -1 MIL-C-43737B . MILITARY MIL-W-4088 MIL-T-5038 MIL-07219 MIL-H-9890 MIL-F-10884 MIL-F-2 1840 MIL-W-27265 S TANDADS FEDEAL FED-STD-751 MILITARY MIL-STD-105 MIL-C-43737B 84 m 9797906 0375833 9 MIL-S
6、TD-129 - MIL-CTD-147 - MIL-ST1)-1188 - MS 27981 4 Webbing, Textile, Woven Nylon Tape Cloth, Duck, Nylon. Hardware, Individual Load Carrying Equipment: Fasteners, Snap Fastener Tapes, Hook and Pile, Synthetic Webbing, Textile, Woven Nylon Impregnated Textile and Webbing, Text le, Reinforcing , Nylon
7、and Hardware, 3iscellaneous Stitches, Seams, and Stitchings Sampling Procedures and Tables for Inspection Marking for Shipment and Storage Palletized Unit Loads Commercial Packaging of Supplies and Equipment Fasteners, Snap, Style 2A (Small Wire Spring Clamp by At tributes TYP) DRAWING U.S. ARMY NAT
8、ICK RESEARCH AND DEVELOPMENT LABORATORIES 2-2-282 - Case, Maintenance Equipment, Small Arms, (For M16A1 Rifle); Assembly Complete (Copies of specifications, standards and drawings required by contractors in connection with specific procurement functions should be obtained from the procuring activity
9、 or as directed by the contracting officer.) 3 . WQUIREMENTS * 3.1 Guide samples. Guide samples of the end item, when furnished, are solely for suidance and information to the contractor (see 6.3). Variations from the specifi- cation may appear in the sample, in which case the specification shall go
10、vern. 3.2 First article. When specified (see 6.2), the contractor shall furnish a sample for first article inspection and approval (see 4.3 and 6.4). 2 .i. -. . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-43737B 84 = 779790b 0395834 O rp t
11、MIL-C-43737B * 3.3 Materials (see 6.5). 3.3.1 Cloth, duck, nylon. The nylon cloth shall be Olive Green 106 and shall conform to type III, class 3 of MIL-C-7219. * 3.3.2 Webbing, nylon. The nylon webbing shall be Olive Drab 7 and shall conform to type VIIIc, class 2 of MIL-W-4088 and class R of MIL-W
12、-27265. * 3.3.3 Tape, nylon. The nylon tape used for binding shall be dyed Olive Drab 7 and shall conform to type III, 3/4 inch wide of MIL-T-5038. * 3.3.4 Fastener tape, hook and pile, nylon. The nylon fastener tape shall be dyed Olive Green 106 and shall conform to type II, class 1, 5/8 inch wide
13、of MIL-F-21840, * 3.3.5 Thread, polyester. The thread for all stitching shall conform to type I, class 1, sub-class A or B, size E of V-T-285. 3.3.5.1 Color. The thread shall be dyed Olive Drab S-1, C.A. 66022, and shall show fastness to weathering equal to or better than the standard sample. 3.3.6
14、Keeper, with slide. MIL-H-9890. The keeper with slide shall conform to type X of 3.3.7 Fasteners, sn* The snap fastener shall be style 2A, finish 2 conforming to MIL-P-10884 and the following listed part numbers of MS 27981: Component But ton Socket Stud Eyelet Part number -lB -3 B -4B -5 B 3.4 Cons
15、truction. The construction shall conform in all respects to Drawing 2-2-282 and as specified herein. * 3.4.1 Stitching, machine. All stitching, except bartacking, shall conform to type 301 of PED-STD-751 with 8 to 10 stitches per inch. 3.4.1.1 Type 301 stitching. Ends of all stitching shall be bacbs
16、titched or over- stitched 1/2,inch minimum except- where ends are turned under in a hem or held down by other stitching. stitching resultingin puckering of the materials sewn. in the materials sewn. Thread tension shall be maintained so that there will be no -loose stitching resulting in loose bobbi
17、n or top thread, or excessively tight The lock shall be embedded 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_-.l_l-_- - MIL-C-q3737B 84 = 979790b 0395835 2 W I a. Unless otherwise.specified, when thread breaks or bobbin run-outs occur during s
18、titching, the stitching shall be repaired by restarting the stitching a minimum of 1/2 inch back of the end o the stitching. - i/ 3.401.11 as follows: Repairs of type 301 stitching. Repairs of type 301 stitching shall be * b. Unless otherwise specified, thread breaks, or two or more consecutive skip
19、ped or runoff stitches noted during inspection of the item (in-process or end item) shall be repaired by overstitching. The stitching shall start a minimum of 1/2 inch in back of the defective area, continue over the defective area and continue a minimum of 1/2 inch beyond the defective area onto th
20、e existing stitching. defective stitching, without damaging the materials, and restitching in the required manner. L/ Loose or excessively tight stitching shall be repaired by removing the - 11 When making the above repairs, the ends of the stitching are not required to be backs tit ched. 3.4.1.2 Ba
21、rtacking. Unless otherwise specified, bartacking shall be 1/2 + 1/16 inch in length, l/8 + 1/32 inch in width,and shall contain 28 stitches. shall be free from thread breaks and loose stitching. RarFacking 3.4.1.3 Automatic stitching. Automatic stitching machines may be used to perform any of the re
22、quired stitch patterns provided the requirements or the stitch pattern, stitches per inch, and size and type of thread are met; and at least three tying, overlapping or backstitches are used to secure the ends of the stitching. 3.4.1.4 Thread ends. All thread ends shall be trimmed to a length of not
23、 more than 1/4 inch. * 3.4.2 Setting of snap fasteners. A hole shall be prepunched through the, materials before insertion of the button barrel of the female component and the eyelet barrel of the male component. The hole shall be smaller than the outside diameter of the button barrel or the eyelet
24、barrel, as applicable, so that the barrel must be forced through the hole. The hole shall not be punched in the setting operation with the button or eyelet barrel. The fastener components shall be securely clinched without cutting the adjacent materials and no more than three splits shall occur in t
25、he button or eyelet barrels. . 3.4.3 Fusing of nylon tape and webbing ends. All ends of nylon tape and webbing shdl be fused. the tape and webbing yarns all fused together. The apparatus used to fuse the tape and webbing ends shall be . capable of,providing sufficient heat to provide a smooth edge w
26、ith the cut ends of 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-43737B 4 m 7777706 0395836 4 - MIL-C-43737B 3.4.4 Location marks. Location marks shall not be dril1ed:except for locating snap fasteners. O - * 3.4.5 Repairs. Repairs such as
27、 mends, darns or patches shall not be made to the case* 3.4.6 Replacement of defective components. During the spreading, cutting and manufacturing process, components having material defects or damages that are classified as defects in 4.4.3.1 shall be removed from production and replaced with non-d
28、efective and properly matched components. 3.5 Marking. The identification marking shall be applied in the location shown on the drawing and shall conform to type IV, class 5 of DDD-L-20. may be abbreviated to read “Case, Maint. Equip. , Ml681 Rifle“. The letters “US“ shall be applied in the location
29、 and in the size characters indicated on Drawing 2-2-282 and shall conform. to type IV, class 9 of DDD-L-20. Fastness of the class 9 marking shall be as specified for class 5 marking. The nomenclature 3.6 Workmanship. The finished case shall conform to the quality of product established by this spec
30、ification. applicable acceptable quality levels. The occurrence of defects shall not exceed the 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract, the contractor is responsible for the performance of all inspection requirements as specified
31、 herein. Except as otherwise specified in the contract, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set f
32、orth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 Certificate of compliance. Where certificates of compliance are submitted, the Government reserves the right to.check test such items to determine the valid
33、ity of the certification. 4.2 Classification of inspection. The inspection requirements specified herein are classified as follows: a. b. First article inspection (see 4.3). Quality conformance inspection (see 4 -4). * 4.3 Firsi articleinspection. When a first article is required (see 6.2), it shall
34、 be examined for the defects specified in 4.4.3.1 and 4.4.3.2. any defect shall be cause for.rejection of the first article. The presence of 4.4 Quality conformance inspection. Unless otherwise specified, sampling for inspection shall be performed in accordance with MIL-ST-105. 5 Provided by IHSNot
35、for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-Y3737B 4 W 9999906 0395837 h a * MIL-C-43737B 4.4.1 Component and inaterial inspection. In accordance with 4.1, components and materials shall be inspected in accordance with all the requirements of referenced spec
36、ifications, drawings and standards unless otherwise excluded, amended, modi- fied orqualified in this specification or applicable purchase document. * 4.4.2 In-process inspection. Inspection shall be made at any point or during any phase of the manufacturing process to determine whether construction
37、 details which cannot be examined on the finished item are in accordance with specified require- ments. fasteners conform to 3.4.2. made to the items affected and lot in-process. shall be removed from production. This inspection shall include verification that holes punched for snap Whenever nonconf
38、ormance is noted, corrections shall be Items which cannot be corrected * 4.4.3 End item examination. The end item shall be examined-in accordance with 4.4.3.1 and 4.4.3.2. sample unit shall be one case. The lot size shall be expressed in units of one case. The * 4.4.3.1 Visual examination. The end i
39、tem shall be examined for the defects listed below. (AQL) shall be 2.5 major and 6.5 total (major and minor combined) defects per hundred units. The inspection level shall be 11 and the acceptable quality level Classification Major Minor Examine Defect: Cloth Any hole, cut, tear, or abrasion. x Smas
40、h, open place, broken or missing yarn, or multiple floats. X Webbing and tape Cut ends not fused or not fused correctly, i., yarns not fused together or not smooth. X firmly and-tightly woven. X Frayed or scalloped edges; not Fastener tape, hook. Any hole, cut, or tear. and pile Hooks missing or fla
41、ttened impairing function. 6 X X Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-m MIL-C-437376 84 W 7997906 0375838 8 Classification Examine Defect Major Minor i Hardware: General b Keeper Broken or malformed, corroded area, burr, or sharp edge. Fin
42、ish omitted. Finish defects, i.e., wrinkles, drops, thin or loose film. X X Slide component of keeper jams in open, partly closed, or closed position, X NOTE: Check operation of keeper by fully opening and closing. X Snap fastener Any fastener not functioning properly, i.e., fails to snap closed, pr
43、ovide a secure closure, or open freely. X NOTE: The fasteners shall be snapped and unsnapped twice to determine whether parts of fastener separate freely and also effect a secure closure. Clinched excessively tight, cutting adjacent material. Clinched loosely, permitting any component: to rotate fre
44、ely but not to the degree that aay com- ponent can be expected to become detached during use. Clinched loosely to the degree that components can be expected to be- come detached during use, _. NOTE: incomplete roll of end of buttoa or eyelet barrel is evidence of . improper and insecure clinching. I
45、ncorrect style. More than three splits i eyelet: - or buttoa barrels. X X X X x Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-43737B Crass if icat ion Major Minor - Examine Defect Seams and Stitching: Open seams Num : Raw edges (except where
46、required) NOTE : Swms and stitch types Stitch tension Stitches per inch Stitching ends (on stitch type 301) Thread breaks, skipped s eitches or runoffs (on type 301 stitching) Less than 1/2 inch. 1/2 inch or more. X A seam shall be classified as open when one or more stitches joining a seam are brok
47、en or when two or more consecutive skipped or runoff stitches occur. More than 1/2 inch when securely caught in stitching. Raw edges not securely caught in stitching shall be classified as open seams. Wrong seam or stitch type. Loose, resulting in loose top Excessively tight, resulting in or bobbin
48、thread. puckering of material. X Che stitch less than minimum Two or more Stitches less than One or more stitches-in excess specified. i/ minimum specified. 1/ x of maximum specified. - i/ - i/ Defect to be scored when condition exists on major portion of seam. Applicable to each individual seam. No
49、t secured as specified (except where ends are held down by other stitching or turned under in a hem) Thread breaks, or two or more con- secutive skipped or runof stitches overstltched less than 1/2 inch in each direction beyond the defective stitching area. X X X X X X X X 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. -
