1、MILITARY SPECIFICATION CASE, TELESCOPE: M164 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-60255 12 m 9999906 033714b m MIL-C-60255 (Mu) 3.5 Per
2、f ormance. 3.5.1 Strap.- The strap shall withstand a direct pull of 20 pounds, subsequent to which it shall remain secure and show no evidence of damage. 3.5.2 Fasteners.- The catches shall function without inter- ference and, when secured, they shall lock the lid to the body and show no evid.ence o
3、f looseness. 3.5.3 u- The lid shall fit true and even and shall open and close easily without restriction or binding. 3.5.4 Pads and gasket.- The pads shall be securely cemented to the lid and body and the gasket shall be securely cemented to the lid. Pads and gasket shall show no evidence of damage
4、 or looseness. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as-otherwise specified, the supplier may utilize
5、 his own facilities or any commercial laboratory acceptable to 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 supplies and services conform to prescribed requirements. 4.1.1 Gene
6、ral provisions.- The component and subassembly in- spection requirements of MIL-F-13926 form a part of the Quality Assurance Provisions of this specification. Definitions of inspection terms shall be as listed in MIL-STD-109. 4.2 Initial production test.- Initial production test samples shall be sub
7、mitted in accordance with contract requirements. otherwise specified in the contract, samples shall be the first two pro- duction units and shall have been manufactured using the same materials, processes, and procedures as will be used in regular production. Ini- tial production testing shall be in
8、 accordance with 4.3, 4.4, and 4.6 and shall be witnessed by the Government representative for all examina- tions and tests. The Government reserves the right to conduct any or all examinations or tests as may be deemed necessary. Unless 4.2.1 Initial production sample failure.- Should one unit fail
9、 to meet the initial production testing specified in 4.2, the contractor shall cease those operations which are causing the rejection and make the necessary corrections thereto. When corrections in the process or controls have been made, two additional (new) production models shall be submitted in a
10、ccordance with 4.2. 4.3 Inspection provisions. 3. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-bo255 12 W 7777706 0337347 T W MIL-C-60255 (MU) 4,3.1 Submission of product.- Unless otherwise specified by the Contracting Officer, inspection lo
11、t size, lot formation, and pre- sentation of lots shall be in accordance with “Submission of Product“ provisions of MIL-STD-105. shall be inspected in accordance with the inspection provisions contained in MIL-F-13926. Examinations and tests related to Section 3 herein shall be performed on a single
12、 defect (individual characteristic) basis in accordance with MIL-STD-105 and the sampling plans specified in Tables I, II, and III herein. Examinations and tests for packaging, packing, and marking shall be in accordance with MIL-P-14232 and Section 5 here- in. The tabulated classification of defect
13、s shall constitute the mini- mum inspection to be performed by the supplier prior to Government acceptance or rejection by lot. 4,3.2 Examinakkm and tests,- Components and subassemblies TABLE 1 - CLASSIFICATION OF DEFECTS CLASS CHARACTERISTIC REQUIREMENT TEST PROCEDURE CRITICAL : NONE - MAJOR: AQL 2
14、.5% Defective 101. Strap 102. Fasteners 103, Lid 104. Pads and gasket 3.5.1 4.6.2.1 3.5.2 4.6.2.2 3.5.3 4.6.2.3 3.5.4 4.6.264 - MINOR: NONE 4.3.3 Acceptance and rejection.- Rejected lots shall be screened for all defective characteristics. Removal or correction of defective units and resubmittance o
15、f rejected lots shall be in accordance with “Acceptance and Rejection“ as specified in MIL-STD-105. 4.4 Special sampling. 4.4.1 General.- One case shall be selected at random as a special sampling from each 100 produced. quirements and tests in Table II. The sample shall meet the re- TABLE II CHARAC
16、TERISTIC REQUIREMENT TEST PROCEDURE 301. Fabrication 3.2 Applicable drawings - 302. General specification 3.3 MIL-F-13926 - visual 4.4.2 Environmental.- Three cases shall be selected at random visual as samples from each 50 produced, or from each months production, whichever occurs first. Each sampl
17、e shall have met the requirements and tests in Table I and shall then meet the requirements and tests in Table III. 4. - -I 7 ! - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-bo255 12 U 777990b 03373Li 1 MIL-C-60255 (MU) TABLE 1I.T CHARACTER
18、ISTIC REQUIREMENT TEST PROCEDURE 303. Storage temperatures 3.4.1 304. Extreme operating tempera- 3.4.3 tures 305. Water immersion 3.4.4 306. Shock 3.4.5 4.6.1.1 4.6.1.2 4.6.1.3 4.6.1.4 4.4.3 Failure of sample.- Should any one item of a special sam- pling fail to meet the specified test requirements,
19、 acceptance of the product shall be suspended by the Government until necessary corrections have been made by the contractor and the resubmitted samples have been approved (see 4.3.3) . 4.5 Inspection equipment.- Except as otherwise provided for by the contract , the contractor shall supply and main
20、tain inspection equip- ment in accordance with the applicable requirements of MIL-1-45607. 4.5.1 Government furnished inspection equipment.- Where the contract provides for Government furnished test equipment, supply and maintenance of test equipment shall be in accordance with the applicable requir
21、ements specified in MIL-1-45607. 4.5.2 Contractor furnished inspection equipment. 4.5.2.1 Government design.- Unless otherwise specified in the contract, all inspection equipment specified by the contract shall be supplied by the contractor in accordance with 4.5. 4.5.2.2 Contractor design.- The con
22、tractor shall design and supply inspection equipment compatible with the “Test methods and procedures“ specified in 4.6 of this specification and with the component inspection procedures specified in “Examination“ and “Test facilities“ requirements of MIL-F-13926. Since tolerance of test equipment i
23、s normally considered to be within 10% of the product tolerance for which it is intended, this inherent error in the test equipment design must be considered as part of the prescribed product tolerance limit. Thus, concept, constructj.on, materials, dimensions, and tolerances used in the design of t
24、est equip- ment shall be so selected and controlled as to insure that the test equipment will reliably indicate acceptability of a product which does not exceed 90% of the prescribed tolerance limit, and permit positive rejection when non-conforming. Construction shall be such as to facili- tate rou
25、tine calibration of test equipment. 4.6 Test methods and procedures. 4.6.1 Environmental. 4.6.1.1 Storage temperatures.- The case shall be exposed to tem- peratures specified in 3.4.1 in accordance with Procedure II of MIL-F-13926. 5. r Provided by IHSNot for ResaleNo reproduction or networking perm
26、itted without license from IHS-,-,-After exposure, the case shall show no evidence of damage and shall meet the requirements of 3.4.1. 4.6.1.2 Extreme operating temperatures.- The case shall be ex- posed to the temperatures specified in 3.4.3 in accordance with Pro- cedure I of MIL-F-13926. shall me
27、et the requirements of 3.5. While exposed to these temperatures the case 4.6.1.3 Water immersion.- This test shall be performed in accordance with.Procedure I of the water immersion test specified in MIL-F-13926 4.6.1.4 Shock.- The locked case, fitted with a dummy load as specified in 3.4.5, shall b
28、e dropped twice onto a concrete floor from a height of 36 inches. One drop shall be on the edge of the lid; the second drop shall be on the bottom edge of the case. two drops, the case shall meet the requirements specified in 3.4,5. Subsequent to the 4,6.2 Performance. 4.6.2.1 Strap.- This test shal
29、l be accomplished with a direct pull-type scale attached to the strap, a direct pull of twenty pounds. shall be visually examined for defects. The strap shall be subjected to At the completion of the test the strap 4.6.2.2 Fasteners.- Fasteners shall function without interference and shall lock the
30、lid to the body as specified in 3.5.2. 4.6.2.3 u,- The lid shall open and close without restriction and shall meet the requirements specified in 3.5.3. 4.6.2.4 Pads and gasket.- A visual and tactile examination shall be performed to determine that the pads are securely cemented to the lid and body o
31、f the case and that the gasket is securely cemented to the lid, as specified in 3.5.4. 5. PREPARATION FOR DELIVERY 5.1 Packaging, packing, and marking.- Packaging, packing, and marking shall be in accordance with MIL-P-14232 and Packaging Data Sheet MIL-P-l4232/P8270828, the procurement document. Th
32、e level of protection shall be as specified in 6.1 Intended use.- The case covered herein is intended to house and transport Observation Telescope: M49. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Custodian : Amy - MU Preparing activity: Amy - MU Project No. 1290-AlflY Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
