1、3 1, b MILITARY SPECIFICATION MIL-M-43758B 2 July 1991 SUPERSEDING MIL-M-4 3758A 5 October 1977 This specification is approved for use by all Departments and Agencies of the departmnt of Defense. 1. SCOPE 1.1 Scope. Tkis specification covers one type of full length leatherboard misoles. 2.1 Govenime
2、nt documents. 2.1.1 Specifications, standank, and hancboks. The following specifica- Unless otherwise specified, the issues of these d0c;Uments tions, standards, and handbooks form a part of this document to the extent specified herein. are those listed in the issue of the Departmnt of Defense Index
3、 of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS A-A-203 - Paper, Kraft, Untreated PPP-B- 6 3 6 - Boxes, Shipping, Fiberboard Tr-s-735 - Standard Test Fluids; Hydrocarbon Beneficial carmients (reccmendations, additions, deletions)
4、and any pertinent data which may be used in improving this document should be addressed to: U.S. Army Natick Research, Developrent and Engineering Center, Natick, MA 01760-5019 by using the Standardization D0C;ument Improvement Proposal (DD Form 1426) appearing at the end of this document or by lett
5、er. AMSC N/A FSC 8335 DISTRIE3WCION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-43758B MILITARY MIL-L-35078 - mds, Unit: Preparation of Semiperishable Subsistence Items; C
6、lothing, Personal Equipnt and Equipage; General Specification For FED-STD-311 - Leather, Methcds of Sampling and Testing MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes MIL-STD-129 - Marking for Shipnt and Storage MIL-STD-147 - Palletized Unit mds (Unless otherwise
7、 indicated, copies of federal and military specifications, standards, and handbmks are available from the Standardization Dmunents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.2 Non-Govemnt publications. The following document forms a part of this docrument to the ext
8、ent specified herein. the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). Unless otherwise specified, Unless othe
9、rwise specified, AMERICAN SOCIETY FOR TESTING AND MATERIAIS (ASTM) D 3951 - Standard Practice for Comnerical Packaging (Applications for copies should be addressed to the American Society for (Non-Govemnt standards and other publications are normally available Testing and Materials, 1916 Race Street
10、, Philadelphia, PA from organizations that prepare or distribute the documents. also may be available in or through libraries or other informational services. ) 19103-1187.) These documents 2.3 Order of precedence. In the event of a conflict between the text of Nothing in this document, however, sup
11、ersedes applicable this docrument and the references cited herein, the text of this document takes precedence. laws and regulations unless a specific exemption has been obtained. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-9. MIL-M-43758B 83 W
12、99999Ob 0484548 b I TL 3. REQUI- MIL-M-43758B 3.1 First article. When specified (see 6.2), a sample shall be subjected I) to first article inspction (see 6.3) inaccordance with 4.3. 3.2 Material. It is encouraged that recycled material be used when practical as long as it meets the requirements of t
13、his specification. 3.3 Midsole. The midsoles shall be canposed of fibrillated leather bonded together with an elastomeric binder so as to conform to the requirements of this specification. 3.4 Size. When the midsoles are purchased directly by the Government, the size shall be as specified (see 6.2)
14、and the periphery of the midsoles shall be not less than the periphery of the applicable Goverrmnt pattern. Wen the midsoles are purchased as a canponent for use in a footwear specification referencing this specification, the periphery of the midsoles shall be not less than the periphery of the outs
15、oles required in the footwxr specifica- tion that references this specification. 3.5 Physical reauirements. 3.5.1 Color. The color of the midsoles shall be tan. 3.5.2 Thickness. The midsoles shall be furnished in the following thicknesses as specified (see 6.1 and 6.2). NE: 1 iron = 1/48 inch 4-1/2
16、f 1/2 irons 9 f 1 irons 3i5.3 Compressibility. The canpressibility of the 4-1/2 irons midsole The compressibility of the 9 irons shall not be greater than 18 percent. midsole shall not be greater than 25 percent. in 4.4.3, Testing shall be as specified 3.5.4 Flex enurance. 4.4.3 for flex endurance.
17、shall not break when subjeed to the n-r of flexes specified in table I. The midsoles shall be tested in accordance with A minimum of 80 percent of the specimens tested TABLE I. Flex endurance Thickness of midsole No. of flexes Iminimuml 4-1/2 irons 9 irons 10,000 2,000 3 Provided by IHSNot for Resal
18、eNo reproduction or networking permitted without license from IHS-,-,-MIL-M-43758B 4 3.5.5 Stitch tearinq strenqth. The midsole shall meet the minimum stitch tearing strength values specified in table II when tested as specified in 4.4.3. TABLE II. Stitch tearinq strenqth Stitch tearing strength, mi
19、nimum Thickness pounds 4-1/2 irons: Dry After imnersion in water After inmersion in jet fuel 9 irons: Dry After inmersion in water After inmersion in jet fuel 30 20 30 40 30 40 3.5.6 Water absorption. The midsole shall gain not more than 30 percent of its weight by water absorption when tested as sp
20、ecified in 4.4.3. percent when tested as specified in 4.4.3. 3.5.7 Stability. The area of the midsole shall not change by more than 10 3.6 Chemical requirements. 3.6.1 Paranitrophenol content. The midsoles shall contain not less than 0.18 percent or not more than 0.70 percent paranitrophenol fungici
21、de when tested as specified in 4.4.3. product established by this specification and the occurrence of defects shall not exceed the applicable acceptable quality levels. 3.7 Worlananship. The finished midsoles shall conform to the quality of 4. QUALITY ASSURANCE PVISIONS 4.1 Responsibility for insmti
22、on. Unless otherwise specified in 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 awn or any othe
23、r facilities suitable for the perfom- ance 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 ser
24、vices conform to prescribed requirements. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-M-43758B 83 7997906 0484550 4 MIL-M-43758B 4.1.1 Responsibility for ccmpliance. A11 items shall meet all requirements of sections 3 and 5. specification
25、shall became a part of the contractors overall inspection system or quality program. The absence of any inspection requimnts in the Specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with al
26、l requirements of the contract. inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, huwever, this does not authorize submission of knm defective material, either indicated or actual, nor does it cdt the Government to accept defective m
27、aterial. The inspection set forth in this Sampling 4.1.2 Certificates of compliance. When certificates of compliance are sulmitted, the Government reserves the right to inspect such items to determine the validity of the certification. 4.2 Classification of inspections. The inspection requirements s
28、pecified herein are classified as follows: a. b. First article inspection (see 4.3). Quality conformance inspection (see 4.4). 4.3 First article inspection. When a first article is required (see 3.1 and 6.2), it shall be examined for the defects specified in 4.4.2.1 and 4.4.2.2, and tested for the c
29、haracteristics specified in 4.4.3. 4.4 Quaiitv conformance inswction. ness otherwise specified, sanpling e for inspection shall be performed in accordance with MIL-STD-105. 4.4.1 Component and material inspection. In accordance with 4.1, components and materials shall be inspected in accordance with
30、 all the requirements of referenced doc=uments unless otherwise excluded, amended, modified, or qualified in this specification or applicable purchase docwnent. 4.4.2 kid item examination. 4.4.2.1 End item visual examination. The midsoles shall be examined for Any sample containing one the defects l
31、isted in table III. midsoles. or more defects shall be classified as a defective unit. examinations shall be perfonried in accordance with FED-SIT)-311. The lot size shall be expressed in units of The sample unit shall be one midsole. Sampling for these 5 Provided by IHSNot for ResaleNo reproduction
32、 or networking permitted without license from IHS-,-,-_ _ . - MIL-U-43758B 83 = 99999Ob 0484551 b MIL-M-43758B TABLE III. End item visual defects Examine Defect Color Not tan Quality Any hole, cut, tear, crack, deep gouge, brittle area or evidence of delamination 4.4.2.2 End item dimensional examina
33、tion. The midsoles shall be examined for the defects listed in table IV. of midsoles. one or more defects shall be classified as a defective unit. these examinations shall be performed in accordance with FED-STD-311 except that a sample size of 15 and a rejection number of 2 shall be applicable for
34、thickness determinations on lots consisting of 51 or more units of product. The lot size shall be expressed in units The sample unit shall be one midsole. Any sample containing Sampling for TABLE IV. End item dimensional defects Examine Defect Size Outline of midsole is less than periphery of applic
35、able pattern Thickness L/ Thickness of midsole not as specified - i/ The thickness shall be determined in accordance with Methcd 1011 of FED-Srp-311 except that no individual measurement shall be less than the minimm or greater than the maximum specified. one or mre thickness measurmnts outside the
36、specified thickness range shall be classified as a defective unit. Any sample unit having 4.4.3 End item testinq. The end items shall be tested for the character- istics listed in table V. wherever applicable and as listed in table V, shall be follcwed. The lot size shall be expressed in units of mi
37、dsoles. midsoles, and the sample size shall be 15 sample units selected at randam throughout the lot. than 1/2 inch from the edge of any midsole. the individual values utilized in expressing the final results. failure shall be cause for rejection of the lot. The methods of testing specified in FED-S
38、TD-311, The sample unit shall be two Specimens for chemical tests shall be taken at no closer All test results shall contain Any test 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-c MIL-M-43758B TAEKE V. End item tests e - Requirement applicable
39、to : Requirement Test Composite method unit smle Characteristic paramaph - - Material identification 3.3 - i/ Compressibility 3.5.3 4411 X Flex endurance 3.5.4 4.5.1 2/ X Dry 3.5.5 2141 2/ X After Wrsion in water 3.5.5 4.5.2 S/ X fuel 3.5.5 4.5.3 2/ X Water absorption 3.5.6 8112 X Area stability 3.5
40、.7 7031 X Stitch tearing strength: After imnersion in jet - Paranitrophenol content 3.6.1 6711 - l/ A certificate of canpliance shall be sulxnitted and will be acceptable for the stated requirement. - 2/ mo specimens shall be tested frm each sample unit. be cut with its length dimension perpendicula
41、r to the length dimension of the midsole and the other specimen shall be cut with its length dimension perpendicular to the width dimension of the midsole. One specimen shall 4.4.4 Packaqinq examination. The fully packaged end item shall be examined for the defects listed below. units of shipping co
42、ntainers. container fully packaged. acceptable quality level (A( incorrect; illegible; of improper size, and exterior) location, sequence, or method of application Materials Workmanship Content Any component missing, damaged, or not Inadequate application of components, such as: as specified incompl
43、ete sealing or closure of flap, improper taping, loose strapping or inadequate stapling Wilged or distorted container Nimiber per container is more or less than required 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-43758B 83 9999706 048455
44、3 T I MIL-M-43758B 4.4.5 Palletization examination. The fully packaged and palletized end items shall be examined 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. The inspection level s
45、hall be S-1 and the AQL, expressed in tem of defects per hundred units, shall be 6.5. Examine Defect Finished dimensions Ungth, width, or height exceeds specified maximum requirement Palletization Pallet pattern not as specified md not bonded as specified Weight Exceeds maximum load limits Marung Cm
46、itted; incorrect; illegible; of improper size, location, sequence, or mthod of application 4.5 Methods of inspection. 4.5.1 Flex endurance test. The specimen shall be a 10 m by 80 m piece One end of the specimen shall be of leatherbmrd cut from the sample unit. clamped in the jaws of the Satra Fiber
47、board Flexing Machine SM-129 (see 6.4). The specimen shall then be subjected to 180 degrees of flexing at a rate of 60 flexes per minute until failure occurs. The total nirmber of flexes required to cause failure of the specimen shall be reported. ducted under Atmospheric Conditions for Testing as s
48、pecified in FED-STD-311. A 2-kg weight shall be clamped to the other end of the spinaen. The test shall be con- 4.5.2 Stitch tearinu strenqth test (after inmersion in water). Method 2141 of FED-SID-311 shall be used except that the specimens shall be hrersed in distilled water for a period of 4 hour
49、s prior to determining the stitch tearing strength. in a 1-quart jar containing 250 mL of distilled water. period the jar shall be occasionally agitated by hand to assist in wetting the specimens uniformly. shall be removed from the jar, lightly blotted to remove excess water, and imneiiately tested for stitch tearing strength. Imibersion shall be accomplished by placing the specimens During the inmersion At the end of t
