1、MIL-S-3720E 66 m 9997906 0324375 5 m MIL-S-3720E 2 December 1986 SUPERSEDING MIL-S-3720D 25 February 1980 MILITARY SPECIFICATION SKETCHING BOARD, WITH WATERPROOF COVER AND TRIPOD This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope.
2、This specification covers a wooden sketching board with built-in compass, a waterproof cover, and a folding extension tripod. 2. APPLICARLE DOCUMENTS 2.1 Government documents. $. c d 2.1.1 Specifications and standards. The following specifications and standards form a part of this specification to t
3、he extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation. SPEC I FICATIONS FEDERAL L-P - 1 O 3 5 QQ-B-6 13 - P
4、lastic Molding Material, Vinyl Chloride, Polymer and Vinyl Chloride- Vinyl Acetate Copolymer, Rigid. - Brass, Leaded and Nonleaded: Flat Products (Plate, Rar, Sheet, apd Strip). Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this d
5、ocument should be addressed to: Belvoir Research, Development, and Engineering Center, ATTN: STRBE-TSE, Fort Belvoir, VA 22060-5606 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by USA Iletter. 1 AMSC N/A FSC 6675 DI
6、STRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. I THIS DOCUMENT CONTAINS j 6 PAGES. - . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-QQ-B-750 QQ-C-390 MMM-A- 10 O PPP-13-601 PPP-B-62 1 PPP-B-636 dIL-S-3 7 20E - Bron
7、ze, Phosphor; Plate, Rod, Sheet, Strip, Flat Wire, and Structural and Special Shaped Sections. Bar). - Copper Alloy Castings (Including Cast - Adhesive, Animal Glue. - Boxes, Wood, Cleated-Plywood, - Boxes, Wood, Nailed and Lock-Corner. - Boxes, Shipping, Fiberboard. MILITARY MIL-T-704 STANDARDS MIL
8、ITARY - Treatment and Painting of Materiel. M IL-S TD- 1 O 5 MIL-STD-129 MIL-STD-889 - Sampling Procedures and Tables for - Marking or Shipment and Storage. - Dissimilar Metals. Inspection by Attributes, (Copies of specifications, standards, and other Government documents required by contractors in
9、connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Other-, The following documents form a part of this specification to the extent specified herein, Unless otherwise specified, the - issues of the documents
10、which-are DOD adopted shall be those listed in the issue of the DoDISS specified in the solicitation. issues of documents not listed in the DoDISS shall be the issue of the non-Government documents which is current on the date of the solicitation. Unless otherwise specified, the AMERICAN SOCIETY FOR
11、 TESTING AND MATERIALS (ASTM) B 209 B 221 - Aluminum-Alloy Extruded Bars, Rods, Shapes, and Tubes. B 316 D 2016 - Moisture Content of Wood. D 3951 - Standard Practice for Commercial Packaging. - Aluminum-Alloy Sheet and Plate. - Aluminum-Alloy Rivet and Cold-Heading Wire and Rod. (Application for co
12、pies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (Non-Government standards and other publications are normally available from the organizations which prepare or which distribute the documents. documents also may be available in or
13、 through libraries or other informational services, ) These 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-3720E bb m 7777706 032L1377 7 I -7 MIL-S-3720E 2.3 Order of precedence. In the event of a conflict between the text of this specificat
14、ion and the references cited herein, (except for associated detail specifications, specifications sheets or MS standards), the text of this specification shall take precedence. shall supersede applicable laws and regulations unless a specific exemption has been ob ta ked. Nothing in this specificati
15、on, however, a 3. REQUIREMENTS 3.1 Description. The sketching board, with waterproof cover and tripod (hereinafter specified as sketching board), shall be as shown on figure 1 through 4 and as specified herein. c -.Y 3.2 First article. Unless otherwise specified (see 6.21, a sample shall be i subjec
16、ted to first article inspection (see 4.3 and 6.3). deviations of sketching boards from the approved first article during production will be subject to the approval of the contracting officer, first article will not relieve the contractor of his obligation to furnish sketching boards conforming to th
17、is specification. Any changes or Approval of the 3.3 Material. Material shall be as specified herein and on the applicable figures. be subject to all provisions of this specification. Materials not specified shall be selected by the contractor and shall 3.3.1 Material deterioration prevention and-co
18、ntrol. The sketching board shall be fabricated from compatible materials , inherently corrosion resistant or treated to provide protection against the various forms of corrosion and deterioration that may be encountered in any of the applicable operating and storage environments to which the sketchi
19、ng boards may be exposed. * 3.3.1.1 Dissimilar metals. Dissimilar metals shall not be used in intimate contact with each other unless protected against galvanic corrosion. metals and methods of protection are defined and detailed in MIL-STD-889. Dissimilar 3.3.1.2 Identification of materials and fin
20、ishes. The contractor shall identify the specific material, material finish or treatment for use with component and subcomponent , and shall make information available upon request to the contracting officer or designated representative. 3.3.2 Recovered materials. For the purpose of this requirement
21、 , recovered materials are those materials which have been collected from solid waste and reprocessed to become a source of raw materials, as distinguished from virgin raw materials. Unless otherwise specified (see 3.3.111, the components, pieces and parts incorporated in the sketching board may be
22、newly fabricated from recovered materials to the maximum extent practicable, provided the sketching board produced meets all other requirements of this specification. remanufactured components, pieces and parts shall not be incorporated in the sketching board. Used, rebuilt or 3 F - i . Provided by
23、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-3720E 3.3.3 m. Cotton duck shall be 12-ounce, hard textured, cotton cloth, treated for mildew resistance with copper 8-quinolinolate, and dyed green 383 in accordance with MIL-T-704, The treatment and dying p
24、rocesses shall not leave material on the duck surface that will stain or adversely affect drawing paper carried in the cover fabricated from the duck. 3.3.4 Thread shall be three-cord (stitching) type made from long-line linen, treated for mildew resistance with copper 8-quinolinolate, and dyed gree
25、n 383 in accordance with MIL-T-704. 3.3.5 B-inding cape. Tape shall be plain weave general purpose cotton textile dyed and treated the same as cotton duck. I Y 3.3.6 Closuretagys. The pile tape shall be nylon, 1 inch wide, 8.0 mil hook (330 deni and oil spots created by treating which would affect a
26、ppearance. 4. QUALITY ASSURANCE PROVISIONS 4.1 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. the contract or purchase order, the contractor may use his
27、 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 forth in the specification where such inspections are deemed necessary to assure su
28、pplies and services conform to prescribed requirements, Except as otherwise specified in 4,1,1 Responsibility for compliance, All items must meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part: of the contractor?s overall inspection system or
29、 quality program, absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of assuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling in quality conformance does
30、 not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. The 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. b, C. First article inspection (
31、see 4.3). quality conformance inspection (see 4.4) Inspection of packaging (see 4.6). 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 MIL-S-3720E 4.3 First article inspection. 4.3.1 Examination. The first article sketching board, cover, and tripo
32、d shall be examined as specified in 4.5.1. cause for rejection. Presence of one or more defects shall be 4.3.2 -. The first article sketching board, cover, and tripod shall be tested as specified in 4.5.2. Failure of the test shall be cause for rejection. 4.4 Quality conformance inspection. 4.4.1 Ca
33、mplin&. Sampling for examination and test shall be in accordance with MIL-STD-105. 1 i 4.4.2 Examination. Samples selected in accordance with 4.4.1 shall be examined as specified in 4.5.1. defective. AQL for major defects shall be 1.0 percent AQL for minor defects shall be 2.5 percent defective. I*
34、I Re q u ir emen t paragraph De f ec t s Number 4.4.3 Tests. Samples selected in accordance with 4.4.1 shall be tested as AQL for major defects shall be 1.0 percent defective. specified in 4.5.2, for moisture content shall be 1.0 percent defective. AQL 4.5 Inspection procedure. 4.5.1 Examination. Th
35、e sketching board, cover, and tripod shall be examined as specified herein for the defects listed in table I. TABLE I. Examination schedule. Major 101. Material not as specified. Each incorrect 3.3 material shall constitute one defect. deterioration or treated to be resistant to corrosion and deteri
36、oration for the applicable and operating environments. not effectively insulated from each other. for identification of material, material finishes or treatment. 105. Used, rebuilt or remanufactured components, 3.3.2 pieces or parts incorporated in the sketching board. 102. Materials are not resista
37、nt to corrosion and 3.3.1 103. Dissimilar metals as defined in MIL-STD-889 are 3.3.1.1 104. Contractor does not have documentation available 3.3.1.2 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-3720E TABLE I. Examinati dule. (Contd) w Req
38、u ir emen t umber De f ec t s paragraph 106. Graduations and numbering not as specified. 3.4.1 107. Compass not as specified, 3.4.2 108. Tripod not as specified. 3.4.3 109. Seam type not as specified. 3.4.4 110. Stitch type not as specified. 3.4.4 111. Dimensions not as specified. 3.5 112. Workmansh
39、ip not as specified. 3.8 Minor - 201. Color and finish not as specified. 3.6 202, Marking not as specified. 3.7 4.5.2 Tests. The moisture content of the wood in the sketching board, tripod, and tripod head shall be tested by the electronic moisture meter-method of ASTM D 2016. A moisture content les
40、s than 6 percent or more than 8 percent shall cons titute failure of this test . 4.6 Ins_pecn. of packaging. 4.6.1 Quality conform.ance inspection. 4.6,l.l _i_tproduct. For the purpose of inspection, a completed pack prepared for shipment shall be considered a unit of product. 4.6.1 . 2 wl,in&. Samp
41、ling for examination shall be in accordance with MIL-STD-1050 4.6.1.3 Examination. Samples, selected in accordance with 4.6.1.2, shall be examined for the following defects. AQL shall be 1.0 percent defective. Defect - No. 113. 114. 115, 116. 117. Unit container closure not as specified 118. 119. u
42、Waterproof cover not in place on sketching board as specified. Tripod not collapsed and secured as specified. Unit container not as specified. Cushioning and positioning devices not utilized as specified. Commercial preservation not as specified. Shipping container not as specified. 8 Com - B L A 5.
43、1,1 5,1.2 5.1.1 5.1.2 - 5.1,1 5.1.1 5.1.1 5.2.1 5.1.2 5.2.2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-h MIL-S-3720E bb M 7777906 0124403 O Com - MIL-S-3720E I B & A L No. Defect - 120. Gross weight of shipping container exceeds 5.2.1 5.2.2 121.
44、 Closure of shipping container not as 5.2.1 5.2.2 122. Strapping not as specified. 5.2.1 5.2.2 123. Commercial packing not as specified. 5.2.3 124. Marking not as specified. 5.3.1 5.3.1 5.3.2 acceptable maximum. specified. 5. PACKAGING 5.1 Preservation. Preservation shall be level A or commercial as
45、 specified b (see 6.2). . Each sketching board, with the waterproof cover in place, and with the tripod collapsed and secured in its smallest configuration, shall be placed together, as a unit, in a close-fitting box conforming to PPP-B-636, grade WC, style optional. Cushioning and positioning devic
46、es shall be utilized within the box as required to prevent damage to the contents and to eliminate excessive movement within the container. Box closure shall be method V in accordance with the appendix to the box specification. “ 5.1.2 Commercial. Each sketching board, with the waterproof cover in p
47、lace, and with the tripod collapsed and secured in its smallest configuration, shall be preserved in accordance with ASTM D 3951. 5.2 Packin&. Packing shall be level A, level B or commercial as specified a (see 6.2). 5.2.1 Level A. Sketching boards, preserved as specified in 5.1, shall be packed in
48、close-fitting boxes conforming to PPP-B-601, overseas type, style optional, or PPP-B-621, class 2, style optional. The gross weight of each box shall not exceed 200 pounds. the applicable box specification or the appendix thereto except the strapping shall be flat and the finish B. Box closure and s
49、trapping shall be as specified in 5.2.2 Level B. Sketching boards, preserved as specified in 5.1, shall be packed as specified in 5.2.1 for level A except that boxes shall be domestic type or class and that strapping may be finish A. 5.2.3 Commercial. Complete sketching boards, preserved as specified in 5.1, shall be packed in accordance with ASTM D 3951. 5.3 Marking. 5.3.1 Levels A and B. In addition to any special or identification marking required by the c
