1、MIL-S-3725E 2 November i983 SUPERSEDING MIL-S-3725D 27 October 1972 MILITARY SPECIFICATION SHELTER HALF, TENT This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This document covers one type and size shelter half which is one half
2、 of a small tent. Two shelter halves, when joined, form a tent with both ends closable. 2. APPLICABLE WCUbENTS 2.1 Government doeuments. Unless otherwise specified, the following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this document to
3、the extent specified herein: SPECIFICATIONS FEDERAL A-A-203 - Paper, Kraft, Untreated V-T-285 - Thread, Polyester CCC-C-419 - Cloth, Duck, Cotton, Unbleached, Plied-Yarns CCC-D-950 - Dyeing and Aftertreating Processes for Cotton Cloths DDD-L-20 - Label: For Clothing, Equipage and Tentage (General Us
4、e) PPP-B-636 - Boxes, Shipping, Fiberboard Beneficial comments, (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: US Army Natick Research and Development Center, Natick, MA 01760 by using the self-addressed Standardi
5、zation Document Improve- ment Proposal (DD form 1426) appearing at the end of this document or by letter. FSC 8340 THIS DOCUMENT CONTAINS fi PAGES, Licensed by Information Handling Services_ _ - -_ - - MIL-S-3725E 83 - 7777906 0374232 T - MIL-S-3725E MILITARY MIL-P-501 MIL-P-6 08 MIL-L-1709 MIL-C-23
6、99 MIL-F-10884 MIL-G-16491 MIL-R-30500 STANDARDS FEDERAL FED-STD-751 MILITARY Pins, Tent, Metal Pole Section, Tent: Upright and Adapter, Tent Pole Lines, Tent Cement, Liquid, Tent Patching Fasteners , Snap Grommet, Metallic Rope, Polyes ter Stitches, Seams, and Stitchings MIL-STD-105 - Sampling Proc
7、edures and Tables for Inspection by Attributes MIL-STD-129 - Marking for Shipment and Storage MIL-STD-147 - Palletized Unit Loads DRAWINGS U.S. ARMY NATICK RESEARCH AND DEVELOPMENT CENTER 5-4-29 - Shelter Half, Tent; Illustration and Sections 5-4-30 - Shelter Half, Tent; Details (Copies of documents
8、 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 document of the issue in effect on date of invitation for bid
9、s or request for proposal, form a part of this document to the extent specified herein. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 3951 - Standard Practice for Commercial Packaging (Applications for copies should be addressed to the American Society for Testing and Materials, 1916 Kace Stre
10、et, Philadelphia, PA 19103. ) -L 2 Licensed by Information Handling ServicesMIL-S-3725E 83 7977706 0374233 L MIL-S-3725E O z a a (Technical society and technical association documents are generally available for reference from libraries. using Federal agencies.) They are also distributed among techn
11、ical groups and * 2.3 Order or 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 3.1 Guide sample. Samples, when furnished, are solely for guidance and information to the contract
12、or (see 6.3). Variations from this document may appear in the sample in which case this document shall govern. 3.2 First article. When specified a sample shall be subjected to first article inspection (see 4.3, 6.2 and 6.5). * 3.3 Materials (see 6a6). * 3.3,1 Cloth, duck, cotton. The cloth, before f
13、inishing, shall be 8.25 ounce per square yard conforming to type III of CCC-C-419. * 3.3.1.1 Color and treatment. The 8.25 ounce cotton duck shall be dyed Olive Green 107 to match standard sample (see 6.3) and shall be water repellent and mildew resistant treated, conforming to type I, class B of CC
14、C-D-950. 3.3.2 Thread, polyester. The thread for all stitching shall conform to type I, class 1, sub-class B of V-T-285, E shall be used for the looper of the type 401 stitching and for bartacking. Size F shall be used for all stitching except size 3.3.2.1 Color. The thread shall be dyed Olive Drab
15、S-1, C.A. 66022, and shall show fastness to weathering equal to or better than the standard sample (see 6.3). If no standard sample is available, the thread shall show good fastness to weathering. - * 3.3.3 Lines, tent. The tent lines shall conform to MIL-L-1709. The guy line shall be type XII1 and
16、the footstops shall be type IL. be polyester, conforming to MIL-R-30500. MIL-L-17 O9 . Alternatively, the lines may The finished requirements shall be as in 3.3.4 Grommets. The grommets shall be type II, class 3, size No. 25 conforming to MIL-G-16491. 3.3.5 Fasteners, snap. The snap fasteners shall
17、consist of a socket and stud- eyelet combination, conforming to style 2, finish 2, of MIL-F-10884. The stud- eyelet combination shall be size 1. 3 Licensed by Information Handling Services- _ MIL-S-3725E 83 W 777770b 0374234 3 W MIL-S-3725E * 3.3.6 Pins, tent, metal. When required (see 6.2), five (5
18、) tent pins conforming to type I of MIL-P-501 shall be included with the shelter half. * 3.3.7 Pole section, tent. When required (see 6.2), three (3) tent poles conforming to item 1 sections of MIL-P-608 shall be included with the shelter half. 3.4 Construction. The construction shall conform in all
19、 respects to the drawings listed in Section 2 and as specified herein. P 3.4.1 Shelter half body. The shelter half body shall be of single panel, two panel or three panel construction depending upon width of material furnished. When using two or three panel construction the panels shall be joined in
20、 accordance with the applicable method of section G-G of Drawing 5-4-30 or in accordance with section H-H of Drawing 5-4-29. Location of seam(s) is optional. Seams shall be vertical as shown on Drawing 5-4-30. folding the ends shall be as shown on Drawing 5-4-30. The finished dimensions of the shelt
21、er half body prior to 3.4.2 Shelter half doors. The doors shall be of single panel or two panel construction. with section D-D or H-H on Drawing 5-4-29. Location of seam is optional. Seam shall be vertical as shown on Drawing 5-4-30 . shelter half doors prior to folding the edges shall be as shown o
22、n Drawing 5-4-30. For two panel construction the joining seam shall be in accordance The finished dimensions of the 3.4.3 Stitching, machine. All stitching, except bartacks, shall conform to FED-STD-751 as follows: For all stitching - Type 301, 7 to 9 stitches per inch. except stitching indicated by
23、 Z on drawings. For all stitching - Type 401, 7 to 9 stitches per inch. indicated by Z on drawings. 3.4.3.1 Stitch margins. Unless otherwise specified, all stitching margins shall be 1/8 inch - 4- 1/16 inch. 3.4.3.2 Type 301 stitching. Ends of all stitching shall be backstitched or overstitched 1 in
24、ch minimum except where ends are turned under in a hem or held down by other stitching. Thread tension shall be maintained so that there will be no loose stitching resulting in loose bobbin or top thread, or excessively tight stitching resulting in puckering of the materials sewn. The lock shall be
25、embedded in the materials sewn. 4 Licensed by Information Handling ServicesMIL-S-3725E I 3.4.3.2.1 as follows: Repairs of type 301 stitching. Repairs of type 301 stitching shal.1 be a. When thread breaks or bobbin run-outs occur during sewing, the stitching shall be repaired by restarting the stitch
26、ing a minimum of 1 inch back of the end of the stitching. - 1/ b. Thread breaks or two or more consecutive skipped or runoffs 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 inch in back of the defecti
27、ve area, continue over the defective area and continue a minimum of 1 inch beyond the defective area onto the existing stitching. stitching shall be repaired by removing the dePective stitching, without damaging the materials, and restitching in the required manner. i/ Loose or excessively tight i/
28、- When making the above repairs the ends of the stitching are not required to be backstitched. c 3.4.3.3 Type 40 stitching. Ends of stitching for joining the doors to the body, at the bottom edge of the shelter half, shall be secured with bartacks across the seams as shown on Drawing 5-4-29. will be
29、 no loose stitching. All repairs shall be in accordance with 3.4.3.2.1.a and 3.4.3.2.1.b. Repairs in type 401 stitching may be made using type 301 stitching. The chain portion of the stitching shall not appear on the outside of the shelter half . Thread tension shall be maintained so that there 3.4.
30、3.4 Automatic stitching. Automatic machines may be used to perform any of the required stitch patterns provided the requirements for the stitch pattern, stitches per inch, size and type of thread are met, and at least three or more tying, overlapping or back stitches are used to secure the ends of t
31、he stitching. 3.4.3.5 Bartacks. Unless otherwise specified, bartacks shall be 1/2 -i- 1/16 inch long, 1/8 + 1/32 inch wide, and shall contain 28 stitches. free from thread breaks and loose stitching. Bartac6 shall be * 3.4.3.6 Lubrication of thread. There shall be no additional lubrication of the th
32、read by any means prior to or during sewing other than that applied by the thread manufacturer at the time of manufacture (see 4.4.1.1). 3.4.3.7 Thread ends. Ail thread ends shall be trimmed to a length of not more than 1/4 inch. 5 - - I /- Licensed by Information Handling ServicesMIL-S-3725E 83 777
33、770b 037423b 7 W MIL-S-3725E 3.4.4 Attachment of guy line and footstops. The guy line shall be attached to either one of the guy line loops on the shelter half by passing the looped end through the loop on the shelter half and then passing the free end through the looped end of the line. Loops shall
34、 be pulled up tightly. The footstops shall be attached to the shelter half as shown on Drawing 5-4-29. . * 3.4.5 Setting of grommets . Holes punched to receive the grommets shall be smaller than the outside diameter of the grommet barrel so that the barrel must be forced through the hole. the materi
35、al. The grommets shall be securely clinched without cutting Roll of the clinched grommet shall not contain more than three scores (splits). * 3.4.6 Setting of snap fasteners. The snap fasteners shall be located as shown on the drawings with all studs on the outside and the sockets on the inside. If
36、a hole is punched before inserting the barrel of the eyelet, it shall be smaller than the outside diameter of the eyelet barrel so that the barrel must be forced through the hole. The fasteners shall be securely clinched without cutting the material. The eyelet shall not contain more than three scor
37、es (splits). 3.4.7 Location marks. Location and notice marks shall not be drilled except for locating snap fasteners or grommets. 3.4.8 Repairs. In addition to the stitching repairs allowed in 3.4.3 a maximum of one hole or tear per shelter half may be repaired providing that the hole or tear does n
38、ot exceed 1/2 inch in length or diameter; does not occur on a joining seam or on the peripheral edge; is not within one inch of the outer edge of a grommet or snap fastener, or the edge of a joining seam or hem. inch dimension shall apply only to the longest length of the tear. The hole or tear shal
39、l be repaired as follows: For “L“ shaped tears the 1/2 a. Place the damaged area over a flat surface with the outside surface of the shelter half facing up. (Outside surface is side with “US“ marking.). b. Prepare a circular patch of a size such that when centered on the hole or tear that it extends
40、 a minimum of 3/4 inch from the nearest edge of the hole or tear. C. Prepare a circular template having a cutout 3/8 i- 1/16 inch larger in diameter than the patch. circle using a ball point pen. Center the template over the damaged area and mark off the 6 Licensed by Information Handling ServicesMI
41、L-S-3725E 3 W 7777906 0374237 7 = - - _ . MIL-S-3725E , d. Coat the surface of the patch and the area to be patched that was marked off with the template with cement conforming to EfIL-(2-2399. The cement shall be evenly and smoothly applied and shall be worked well into the fabric. Allow the cement
42、 to dry to a gununy state and apply a second coat to the same surfaces. NOTE: As an option, in lieu of using the template for marking off the area to be coated with cement the template may be held in position and the cement applied to the area within the circle. e. With the cement still wet, positio
43、n the patch centrally over the cemented area on the shelter half and press the cemented surfaces together. cement and air bubbles from under patch with a roller. Roll excess f. Complete the repair by sealing the edge of the patch all around with the tip of a finger or by using an appropriate tool. 3
44、.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. The letters “US“ shall be applied in the location and in the size characters indicated on the drawing and shall conform to type IV, class 9 of DDD-L-20. Fas
45、tness of the class 9 marking shall be as specified for class 5 marking. 3.6 Workmanship . The finished sheter half tent shall conform to the quality established by this document. The occurrence of defects shall not exceed the applicable acceptable quality levels . 4. QUALITY ASSURANCE PROVISIONS _ 4
46、.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is 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
47、 other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. inspections set forth in the document where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. The Government r
48、eserves the right to perform any of the 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 validity of the certification. * 4.2 Classification of inspection. The inspection requirements specifie
49、d herein are classified as follows: a. b. First article inspection (see 4.3). Quality conformance inspection (see 4.4). 7 Licensed by Information Handling ServicesMIL-S-3725E * .4.3 First article inspection. When a first article is required (see 6.2), it shall be examined for the defects specified in 4.4.3 and 4.4.4. defects shall be cause for rejection of the first article. The presence of any 4.4 Quality conformance inspection. Unless otherwise specified, sampling for inspection shall be performed in accordance with MIL-STD-105. 4.4.1 Component and material inspec
