1、MIL-B-18y17 ,m 21 June 1 SUPERSEDING MIL-B-1860D 13 June 1966 c MILITARY SPECIFICATION BUCKLE, SLIDE, PLASTIC This specification is approved for use by all Departments and Agencies of the Department of Defense, 1. SCOPE 1-1 Scope, This specification covers one type of plastic buckle. 1.2 Classificat
2、ion. The plastic buckles shall be of the following classes and sizes as specified (sea 6.2) : z Class 1 - Phenol Formaldehyde (High strength). Class 2 - Phenol Formaldehyde (General purpose). Class 3 - Melamine (General purpose). Sizes: - 1-718 inches (48 mn) and 2-1/4 inches (57 nun). 2. APPLICABLE
3、 DOCUMENTS * 2,l 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 speci- fication to the extent specified herein: Beneficial comments (recommendations, additions, deletions) and any pertinent date which ma
4、y be of use in improving this document should be addressed to : Natick, MA 0176Q by using the self-addressed Standardization Docu- ment Improvement Proposed (DD Form 1426) appearing at the end of this document or by letter. US Army Natick Research ,and Development Command, FCC 8315 Provided by IHSNo
5、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-_- MIL-8-LbOE 83 W 7777406 0424782 O l MIL-B-1860E SPECIFICATIONS FEDWAL i PPP-B-636 - Boxes , Shipping, Fiberboard. PPP-T-45 - Tape, Gunaned, Paper, Reinforced and Plain, for Sealing and Securing. STANDARDS FEDERAL FED
6、-STD-406 - Plastics: Methods of Testing. MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection MIL-STD-129 - Marking for Shipment and Storage. by Attributes. DRAWINGS US ARMY NATICK NATICK RESEARCH AND DEVELOPMENT CC“D 4-1-147 - Buckle impact Machine 4-1-187 - Buckle, Slide, Plastic;
7、sizes 1-7/8 inch and 2-1/4 inch. (Miniature copies of Drawings 4-1-147 and 4-1-187 identified as figures 1 and 2, respectively, are attached for information purposes only.) (Copies of specifications, standards, drawings, and publications required by contractors in connection.with specific procuremen
8、t functions should be obtained from the procuring activity or as directed by the contracting officer . ) * 2.2 Other publications. The following documents form a part of this speci- fication to the extent specified herein. Unless otherwise indicated, the issi:z in effect on date of invitation for bi
9、ds or request for proposal shall apply: NATIONAL MOTOR FREIGHT TRAFFIC ASSOCIATION, INC., AGENT NatiOnal Motor Freight Classification (Application for copies shouldbe addressed to the American Trucking Associa- tions, Inc., Traffic Department, 1616 P Street, N.W., Washington, DC 20036.) 2 Provided b
10、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-1860E UNIFORM CLASSIFICATION COMMITTEE, AGENT Uniform Freight Classification (Application for copies should be addressed to the Uniform Classification Committee, Room 1106, 222 South Riverside Plaza, Chicag
11、o, IL 60606,) 3. REQUIREMENTS * 3.1 First article. When specified (see 6.2), the contractor shall furnish a sample for first article inspection and approval (see 4.3 and 6.5). 3.2 Material. * 3.2.1 Class 1. Class 1 buckles shall be made from a phenol-formaldehyde. cellulose filled molding material,
12、such as a laminated molding board, having a minimum Izod impact strength of 0.7 foot-pounds per inch (37 J/m) of notch (see 4.4.1.1). * 3.2.2 Class 2. Class 2 buckles shall be made from a phenol-formaldehyde, cellulose filled molding material, having a mininnun Izod impact strength of 0,46 foot-poun
13、ds per inch (25 J/m) of notch (see 4.4.1.1). * 3.2.3 Class 3. Class 3 buckles shall be made from an alpha-cellulose filled melamine formaldehyde molding material having a minimug Izod impact strength of 0.25 foot-pounds per inch (13 J/m) of notch (see ,4.4.1.1). 3.3 Design and construction. 3.3.1 De
14、sign. The buckles shall conform to the basic or alternate design as shown on Drawing 4-1-187. 3.3.2 Size 2-1/4 inches (57 mm) . The size 2-1/4 inches (57 mu) buckles shall conform to the construction and dimensions of either the basic design or alternate design shown on Drawing 4-1-187. 3.3.3 Size 1
15、-718 inches (48 m) . The size 1-7/8 inches (48 mn) buckles shall be fabricated only from class 3 material and shall conform to the construction and dimensions of either the basic design or alternate design shown on Drawing 4-1-187 Provided by IHSNot for ResaleNo reproduction or networking permitted
16、without license from IHS-,-,-_ MIL-B-LhOE 3 944490b 0424784 4 b MIL-B-1860E 4 * 3,3,4 Front surface and outer rim. The front surface of all buckles shall be pebbled to simulate leather and the outer rim shall be beaded to simulate stitching as shown on Drawing 4-1-187; * 3.4 Finish, The figished buc
17、kles shall be free of flash and the outside surface shall be produced by molding, The application of a finish or protective coating of lacquer or other finishing materials shall not be permitted. marks are permitted on the back of the buckles provided such marks are no deeper than 0.015 inch (O . 38
18、 nun) Knockout 3.5 Perf ormance. 3.5.1 Breaking strength. When tested as specified in 4,5, buckles shall have a minimum breaking strength as follows: Size 2-1/4 inches(57 mu) Size 1-7/8 inches(48 mn) Class 1, Class 2, Class 3, Class 3, pounds (N) pounds (N) pounds (N) pounds (N) Lot sample Individua
19、l average 170 (756) 100 (445) 75 (334) 75 (334) samples 150 (667) 90 (400) 65 (289) 65 (289) 3.5.2 Impact strength. When tested as specified in 4.5, buckles shall have the following minimum impact strength without evidence of cracking or breaking: Size 2-1/4 inches(57 mn) Size 1-7/8, inches(48 nun)
20、Class 1, Class 2, Class 3, Class 3, inch-pounds inch-pounds inch-pounds inch-pounds Lot sample Individual average 10 7 7 sample 8 5 5 7 5 3.5.3 Water absorption. Class 1 and class 2 buckles shall have a water absorption not greater than 1.0 percent when tested as specified in 4.5. 4 Provided by IHSN
21、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i MIL-B-LbOE 3 9999906 OY24785 b MIL-B-1860E 3.5.4 Color fastness. Class 1 and class 2 buckles shall show no more than a slight color change when tested as specified in 4.5. 3.5,5 Color. The color of.the bucklesshall b
22、e as specified in the contract (see 6.2). standard sample (see 6,4). buckles shall be furnished in dark colors only (see 6.3). The color of the buckles shall be uniform and shall match the Unless otherwise specified, class 1 and class 2 3.6 Workmanship. The finished buckles shall conform to the qual
23、ity of product established by this specification. excead the applicable acceptable quality levels. The occurrence of defects shall not 4. QUALITY ASSURANCE PROVISIONS 4.1 * Responsibility for inspection. Unless otherwise specified in the contract, the contractor is responsible for the performance of
24、 all inspection requirements as specified herein. tractor may use his own or any other facilities suitable for the performance of the inspection requirements specifiedeherein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the s
25、pecification where such inspections are deemed necessary to assute supplies and services conform to prescribed requirements. Except as otherwise specified in the contract the con- 4.1.1 Certificate of compliance. Where certificates of compliance are submitted, the Government tesemes the right to che
26、ck test such items to determine the validity 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 First article inspection. When requir
27、ed (see 6.21, the preproduction samples submitted in accordance with 3.1 shall be inspected as specified in 4.4.2 for compliance with design, construction, workmanship and dimensional requirements. 4.4 Quality conformance inspection. Sampling for inspection shall be performed in accordance with ML-S
28、TD-105, except where otherwise indicated hereinafter. 4.4.1 Component: and material inspection. in accordance with 4.1 above, . components and materials shall be inspected in accordance with all the requirements of referenced specifications, drawings and standards unless otherwise excluded, amended,
29、 modified or qualified in this specification or applicable purchase document . 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-LBbOE 83 m 999990b OLI2478b 8 b MIL-B-18 60E 6 * 4.4.1.1 Certification, The contractor shall furnish a certificate
30、of compliance stating that the material and impact strength conforms to the requirements of 3.2.1, 3.2.2 and 3.2.,3, as applicable. Jr 4.4.2 Examination of the end item. The end item shall be examined in The sample unit accordance with 4.4.2.1 and 4 . 4.2 , 2. quality levels (AQLs) shall be as speci
31、fied in 4.4.2.3. shall be one buckle. buckle of one class and size, The inspection levels and acceptable * The lot size shall be expressed in units of one Jr 4.4,2,1 Visual examination of end item. Defects found during visual examination shall be classified in accordance with the list below. Examine
32、 Defects Not as specified. Not uniform in color or does not match standard sample. Discolored, faded or mottled. Surface haze, color segregation, or resin-streak, Finish Not free of flash. Evidence of protective coating of lacquer or other finishing Any knockout mark on front of buckle. Any knockout
33、 mark on back of buckle deeper than 0.015 inch Chalked, burned, bloom or scaly. Thin spot, wrinkle, pimple or crater. Rough surface. Any design detail departing from specification or drawing Front surface of buckle not pebbled to simulate leather. Any scratch or nick affecting appearance of front of
34、 buckle. Outer rim not beaded to simulate stitching or only partially beaded. Any spot, stain or other discoloration on front of buckle affecting appearance. Any rough or sharp edge. Any crack, break, rupture or fracture. Warped, domed, dished or sinlanark. Msted, malformed, bent out of shape or oth
35、erwise impaired. Crazing, pitted, porous, or bubble (open or closed). Heat mark, blister or uneven surface. Oil, dirt or foreign matter affecting serviceability. material. c (0.38 nm). Design and construction requirements. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted withou
36、t license from IHS-,-,-MIL-B-LBb0E 83 797770b 0429783 T W MIL-B-1860E 4,4,2,2 Dimensional examination, The buckle shall be examined for defects in dimensions, Drawing 4-1-187, shall be classified as 8 defect. Any deviation in dimensions of the buckle, as specified on .,. * 4.4.2.3 Inspection levels
37、and acceptable quality levels (AQLs). The inspection levels and acceptable quality levels (AQLs) expressed in defects per hundred units, shall be as follows: Examination paragraph Inspection level fi 4,4.2.1 4.4.2.2 II s-4 2.5 4.0 4.4.3 Packaging inspection. An examination shall be made to determine
38、 that Defects shall be scored in accordance with the list below. The the preservation-packaging, packing and marking comply with the section 5, . requirements. sample unit shall be one shipping container fully prepared for delivery with the exception that it need not be closed. listed below shall be
39、 made on shippfng containers fully prepared for delivery. The lot size shall be the number of shipping containers in the end item inspec- tion lot. per hundred units. Examination of closure defects The inspection level shall be S-2 and the AQL shall be 2.5 defects Examine Defect incorrect; illegible
40、: of improper size, sequence, location, or method of application. and exterior) Platerials Any component missing, damaged or not as specified. Uorkmanship Content Inadequate application of components , such as incomplete closure of container flaps, loose strapping, inadequate stapling, improper tape
41、ring. Bulged or distorted container. Number of buckles per interior package is more Number of buckles per interior package is more or less than required. 6 inches for . .class 2 size 2-114 inch buckle; and 4 inches for class 3 size 2-1/4 inch, and class 3 size 1-7/8 inches, and shall correspond to t
42、he distance from the bottom of the weight guide tube to the bottom of the test weight. shall not be permitted to rebound on the test specimen. he removed from the jig and examinedafter each impact for cracks and for breakage. The test shall be continued until failure (cracking or breaking). The test
43、 buckle shall be placed front side up . The test weight shall be released from progressively greater The initial The test weight The test specimen shall 5. PACKAGING * 5.1 Preservat on-packaging. Preservation-packaging shall be level A or * 5.1.1 Level A. rive hundred buckles of one class and size o
44、nly, shall be - packaged in a snug-fitting fiberboard box conforming to style RSC, type Cl?, class domestic, variety SW, grade 200 of PPP-B-636. shall be agitated from tlme to time to assure a compact and well-fitted box, Box closure shall be effected with 2-inch (51 mra) minmum width gummed paper t
45、ape conforming to type III, class 2 of PPP-T-45. C a8 specified (see 6.2). Each box, prior to closure 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. _ . MIL-E-LbOE 83 W 777770b 0424770 T MIL-B-1860E * 5.1.2 Level C. Buckles shall be packaged to
46、afford adequate protection against physical damage during shipment from the contractor to the first receiving activity. as that normally used by the contractor for retail distribution. The package and quantity per package shall be the same r. 5.2 Packing. Packing shall be level A, B, or C as specifi
47、ed (see 6.2). . * 5.2.1 Level A packing. Fifteen hundred buckles of one class and size only, packaged as specified in 5.1, shall be packed in a snug-fitting fiberboard shipping container conforming to style RSC, grade V3s of PPP-B-636. shipping container shall be closed in accordance with method III
48、, waterproofed in accordance with method V, and reinforced as specified in the appendix of PPP-B-636, except that the inspection shall be in accordance with 4.4.3. Each * 5.2.2 Level B packing. Fifteen hundred buckles of one class and size only, packaged as specified in 5.1, shall be packed in a snu
49、g-fitting fiberboard shipping container conforming to style RSC, type CF or SF, class domestic, variety SW, grade 275 of PPP-B-636. in accordance with method II as specified in the appendix of PPP-B-636, except that the inspection shall be in accordance with 4.4.3. * 5.2.2.1 Weather-resistant fiberboard containers. When specified (see 6.21, the ahipping container shall be a grade VC, V3s or VS, fiberboard box fabricat
