1、MIL-B-44374 4 7777706 0403957 7 W - MIL -B -4 4 3 7 4 6 September 1989 SUPERSEDING 31 March 1982 MIL -B -4 324 6C MILITARY SPE CI? ICATI ON BINDING ASSEMBLY, SNOWHOE, SNOW AND ICE TRAVERSING EQUIPMENT (SITE) This specification is approved for use by all Departments and Agencies of the Department of
2、Defense. ,- 1. SCOPE 2,1 Scope. This specification covers one type and size of snow and ice traversing snowshoe binding assembly consisting of a nylon synthetic rubber covered pad, tongue and protector; aluminum instep and clamp; corrosion resisting machine screws, rivets and washers; cadmium plated
3、 carbon steel buckles and hooks; nylon thread and webbing. 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 document to the extent specified herein. Unless otherwise specifie
4、d, 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). i 1 I Beneficial comments (recommendations, additions, deletions) and any pertinent data which may b
5、e of use in improving this document should be addressed to: Genter, Natick, MA Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. U.S. Army Natick Research, Development, and Engineering 01760-5014 by using the self-addressed Standardization J I AMSC N/A
6、FSC 8465 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. THIS DOCUMENT CONTAINS 13 PAGES. - - Licensed by Information Handling Services- MIL-B-44374 4 9999906 04037b0 3 = SPECIFICATIONS FEDERAL DDD-L-20 - Label: For Clothing, Equipage, and Tentage, (General PPP-B-63
7、6 - Boxes, Shipping, Fiberboard Use MILITARY MIL-L-35078 - Loads, Unit: Preparation of Semiperishable Subsistence Items; Clothing, Personal Equipment and Equipage; General Specification For STAN DARDS MIL ITA RY MIL-STD-105 - Sampling Procedures and Tables for Inspection MIL-STD-129 - Marking for Sh
8、ipment and Storage MIL-STD-147 - Palletized Unit Loads MIL-STD-731 - Quality of Wood Members for Containers and Pallets by Attributes (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Naval Publications and Forms Center, (ATTN
9、 : NPODS) , 5801 Tabor Avenue, Philadelphia, PA other Government documents, drawings, and publications form a part of this document to the extent specified herein. are those cited in the solicitation. 19120-5099. 2.1,2 Other Government documents, drawings, and publications. The following Unless othe
10、rwise specified, the issues DRAWINGS U.S, ARMY NATICK RESEARCH, DEVELOPMENT, AND ENGINERING CENTER 2-10-156 - Binding Assembly, Snowshoe 2-10-157 - Pad, Assembly 2-10-1 62 - Pad, Pattern (Copies of drawings are available from the U.S. Army Matick Research, Development, and Engineering Center, ATTN:
11、STRNC-EMSS, Natick, MA 01760-5014.) 2 Licensed by Information Handling ServicesMIL-B-44374 2.2 Non-Government publications. The following document forms a part of this document to the extent specified herein. Unless otherwise specified, the issues O of the documents which are DOD adopted are those l
12、isted in the issue of the DODISS cited fn the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). APIERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 3951 - Standard Practice for Commercial P
13、ackaging (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103-1187.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the douments. These docume
14、nts also 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 this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applica
15、ble laws and regulations unless a specific exemption has been obtained. 3. REQUIREmNTS - 3.1 First article. When specified (see 6.21, a sample shall be subjected to first article insEection (see 6.3) in accordance with Q.3. O 3.2 Guide samples. Samples of the end item, when furnished, are solely for
16、 guidance and information (see 6,4). Variations from the specification may appear in the samples, in which case the specification shall govern. 3.3 Materials. The materials shall be as specified on Drawing 2-10-156 and all subsidiary drawings and parts lists pertaining thereto. It is encouraged that
17、 recycled material be used when practical as long as it meets the requirements of this specification. 3.4 Design and construction. The design and construction of the snowshoe binding shall conform to the design, shape and dimensions shown on Drawing 2-10-156 and all subsidiary drawings as specified
18、herein. 3.4.1 Stitchings. All stitchings shall be as specified on Drawing 2-10-157 and subsidiary drawings pertaining thereto. 3.4.1.1 Automatic stitching. Automatic machines may be used to perform any of the stitch patterns provided the requirements for the stitch pattern, stitches per inch, and si
19、ze and type of thread are met, and at least three or more tying, overlapping, or back stitches are used to secure the ends of stitching. O 3 Licensed by Information Handling Services_- _ MIL-B-44374 4 m 779770b 0403762 7 m 3.4.1.2 Type 301 stitching. Ends of all stitching shall be backstitched or ov
20、erstitched as specified on the drawings except where ends are turned under or caught in other seams or stitching. there will be no loose stitching resulting in loose bobbin or top thread or excessively tight stitching resulting in puckering of the materials sewn. lock shall be imbedded in the materi
21、als sewn. Thread tensions shall be maintained so that The 3.4.1.2.1 Repairs of type 301 stitching. Repairs of type 301 stitching shall be as follows: a. When thread breaks or bobbin run-outs occur during stitching, the stitching shall be repaired by restarting the stitching a minimum of 3/16 inch ba
22、ck of the end of the stitching. b. Thread breaks, or two or more consecutive skipped 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 3/16 inch in back of the defective area, continue over the d
23、efective area, and continue a minimum of 3/16 inch beyond the defective area onto the existing stitching. excessively tight stitching shall be repaired by removing the defective stitching without damaging the materiais, and restitching in the required manner. Loose or (When making the above repairs
24、in a. and b. above, the ends of the stitching are not required to be backstitched.) 3.4.1.3 Thread ends. All thread ends shall be trimmed to 1/4 inch maximum length 3.4.2 Setting of rivets, A hole shall be prepunched or predrilled before inserting the rivet. The hole shall be smaller than the outsid
25、e diameter of the rivet barrel so that the barrel must be forced through the hole. The rivet shall be securely clinched without splitting in a manner that will prevent detachment from or cutting of the adjacent material. Unless otherwise specified, the washer may be on either side of components on w
26、hich installed. 3.5 Marking. The identification marking shall be applied in the locations shown on Drawing 2-10-162 and shall conform to type IV, class 5 of DDD-L-20, except that the marking medium may be blue and the legend shall consist of the letters lV.S.l, the contractors name and the contract
27、number shall be printed with characters a minimum of 1/4 inch in height. 3.6 Instruction sheet. A clear instruction sheet shall be furnished with each pair of bindings. The instruction sheet shall contain the information shown on figure 1. 4 Licensed by Information Handling Servicesn MIL -B-4 4374 3
28、.7 Workmanship. The end item shall conform to the quality of product established by this specification. 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. inspectio
29、n requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own OP any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The
30、 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 requirements. 4.1*1 Responsibility for compliance. All items shall meet all requirements of sections 3 an
31、d 5 tight, resulting in excessive puckering of fabric on seam 101 20 1 202 203 204 102 1 O3 104 105 20 5 106 206 6 Licensed by Information Handling ServicesMIL -B-44374 TABLE I. End item visual defects (contd) Classification Examine Defect Major Minor Stitches per inch One less than minimum specifie
32、d 207 Two or more less than minimum One or more in excess of maximum specified 107 specified 208 NOTE: Variation in the number of stitches per inch caused by the operator speeding up the machine and pulling the webbing in order to sew over heavy places or heavy seams, or turning corners shall be cla
33、ssified as follows: (a) Within the minor defect (b) Within the major defect classification - no defect classification - minor defect Thread breaks Not overstitched as specified NOTE: Thread break not backstitched or O overstitched shall be classified as an open seam. Ends of stitching Not backstitch
34、ed 108 (not held down by other stitching or Not secured as specified when turned under in a stitching is performed on an hem) automatic machine Backstitched less than 3/16 inch Box stitching Incomplete: -One row of stitching omitted -Two or more rows of stitching omitted 109 Stitching Any row of sti
35、tching missing (except box stitching) 110 Stitching margin Not as specified 20 9 21 o 21 1 21 2 21 3 7 Licensed by Information Handling ServicesMIL -B -4 4 3 74 TABLE I. End item visual defects (contd) Classification Examine Defect Major Minor Components and Any component or required operation assem
36、bly omitted or not as specified (unless otherwise classified herein) 111 Mend, darn, patch, or splice 112 Needle chew 214 Ends of straps not cut as specified 215 Cut end of webbing Cord Not fused (when applicable) 113 Fused but contains frayed edges or loose fibers 21 6 Ends not seared li4 Knot not
37、securely tied at each end 11s Thread ends Not trimmed to 1/4 inch or less 21 7 Identification Missing 116 marking Not type specified 21 8 Not size specified 21 9 Not in specified location 220 Incomplete, misspelled, or illegible 22 1 4.4.4 End item dimensional examination. The end items shall be exa
38、mined for conformancee to the dimensions specified on the drawings. Only those dimensions that can be evaluated without damaging or disassembling the end items shall be examined. Any dimension not within the specified tolerance shall be classified as a defect. The lot size shall be expressed in unit
39、s of snowshoe binding assemblies. The sample unit shall be one snowshoe binding assembly. The inspection level shall be S-3 (see 6.5). 4,4.5 Packaging examination. The fully packaged end items shall be examined for the defects listed below. The lot size shall be expressed in units of shipping contai
40、ners. The sample unit shall be one shipping container fully packaged. The inspection level shall be S-2 (see 6.5). Examine Defect Marking (exterior Omitted; incorrect; illegible; of improper and interior) size, location, sequence, or method of appica tion 8 Licensed by Information Handling ServicesM
41、IL -I3 -4 4 37 4 Examine Defect Instruction sheet Missing Materials Wor kmanshi p Content Any component missing, damaged, or not as specified Open and noncontinous heat seal and closure of Excess air not expelled from within the polyethylene Inadequate application of components, such as : polyethyle
42、ne bag bag incomplete sealing or closure of flap, improper taping, loose strapping, or inadequate stapling Bulged or distorted container Number of snowshoe bindings per container is more or less than required 4.4.6 Palletization examination. The fully packaged and palletized end items shall be exami
43、ned for the defects listed below. The lot size shall be expressed in units of palletized unit loads. The sample unit shall be one palletized unit load, fully packaged. 6.5). The inspection level shall be S-1 (see Exami ne Defect Finished dimensions Length, width, or height exceeds O specified maximu
44、m requirement Pa 1 let iza t ion Pallet pattern not as specified Interlocking of loads not as specified Load not bonded as specified Weight Exceeds maximum load limits Marking Omitted; incorrect; illegible; of improper size, location, sequence or method of application 5. PACKAGING 5.1 Preservation.
45、Preservation shall be level A. 5.1.1 Level A preservation. Two compiete bindings (one mated pair) and the instruction sheet shall be compactly arranged and unit packed in a close- fitting clear plastic bag. Each bag shall be closed by means of heat sealing. Prior to, or during closure, excess air sh
46、all be expelled. 9 Licensed by Information Handling Services- ._ MIL-B-44374 4 m 7779706 04037b m MIL -B -14 4 3 74 5.2 Packing. Packing shall be level A, B or Commercial, as specified (see 6.21. 5.2.1 Level A packing. Eighty pair of bindings preserved as specified in 5.1, shall be packed in a snug-
47、fitting fiberboard shipping container conforming to style RSC-L, grade V2s of PPP-B-636. shipping container shall be fitted with a box liner conforming to type CF, class weather-resistant, variety DW, grade Vl5c of PPP-B-636. container shall be of a size palletizable in accordance with the appendix
48、of MIL-STD-147. Each shipping container shall be closed in accordance with method III, waterproofed in accordance with method V, and reinforced as specified in the appendix of PPP-B-636. in accordance with MIL-L-35078 for the type and class of load specified (see 6.2). II, class F loads. The inside
49、of each The shipping Shipping containers shall be arranged Strapping shall be limited to nonmetallic strapping, except for type 5.2.2 Level B packing. Eighty pairs of bindings preserved as specified, shall be packed in a snug-fitting fiberboard shipping container conforming to style RSC-L, type CF (variety DW) or SF, class domestic, grade 275 of PPP-B-636. The inside of each shipping container shall be fitted with a box liner conforming to type CF, class domestic, variety DW, grade 275 of PPP-B-636. The shipping container shall be of a size palletizable in ac
