1、1 -flIL-S-50377 12 777770b 0326852 7 I . i MIL- S - 503 79 (PIG) -20 February 1970 MILITARY S PE C I FI CATI ON SIGHTUNIT: M53A1 -, 1. SCOPE 1.1 of Elbow Telescope: M109 and Telescope Mount: M128A1. This specification covers a fire control instrument which is composed 2 APPLICABLE DOCUXENTS 2.1 The
2、following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS Mi 1 it ary MIL- F- 13 9 2 6 NIL-P- 14232 MIL - I - 45 6 O 7 MIL-T-46324 MIL-$1- 5 0380 STANDARDS Mil it ar y MIL-STD-
3、105 MIL-STD- 109 DRAW. NGS 1. U.S. Army Frankford Arsenai F8588780 Cl0559698 F10559699 PACKAGING DATA SHEET 10559698 Fire Control Materiel: General Specification boverning the Manu- facture and Inspection of Parts, Equipment and Tools for Amy Materiel, Packaging and Packing of Inspection Equipment,
4、Supply and Maintenance of Telescope, Elbow: M109 Llount, Telescope: M128A1 Sampling Procedures and Tables for Quality Assurance Terms and Definitions Inspection by Attributes Telescope, Elbow: M109 Sightunit: M53A1 fount, Telescope: M128A1 Packaging of Sightunit: N53A1 FSC 1240 -I . -. - t Provided
5、by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-50379 12 9797906 03261953 O = MIL - S - 5 O 3 7 9 (M1J) (CopXes of speciications, standards, drawings, and packaging data sheet required by suppliers in connection with specific procurement functions shoul
6、d be obtained from the procuring activity or as directed by the contracting officer.) . 3. REQUIRENENTS 3.:. Fabrication.- The sightunit shall be manufactured in accordance with Drawing F10559698 and drawings pertaining thereto. 3.1,l Telescope.- The telescope shall be fabricated in accordance with
7、Drawing F8588780 and drawings pertaining thereto, and shall meet the require- ments of MIL-T-46324. 3.1.2 Mount.- The telescope mount shall be fabricated in accordance with Drawing F10559699 and drawings pertaining thereto, and shall meet the requirements of MIL-M-50380. 3.2 to, and compliance with,
8、 the requirements of MIL-F-13926 listed below: General specification.- The contractor shall be responsible for adherence (a) Order of precedence (b) Dimensions and tolerances (c) Inorganic protective surface finishes (d) Part identification and marking (e) Workmanship 3.3 Telescope retention.- The t
9、elescope clamping mechanism shall prevent movement of the telescope within the telescope mount when a 40 pound-inch torque is applied to the telescope body. an ambient temperature between i60“ and +90 Fahrenheit (F). This requirement shall be met at 4. QUALITY ASSURANCE PROVISIONS 4.1 contract or pu
10、rchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. specified, the supplier may utilize his own facilities or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Gov
11、ernment. 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, Responsibility for inspection.- Unless otherwise specified in the Except as othe
12、rwise 4.1.1 ments of MIL-F-13926 form a part of the quality assurance provisions of this specification. Definitions of inspection terms shall be as listed in EIIL-STD- 109. General provisions.- The component and subassembly inspection require- 4.2 First article (initial production) approval.- The re
13、quirement for first article approval and the responsibility (Government or contractor) for first article testing shall be as specified in the contract. sample for first article approval tests shall consist of three sighgunits The b Provided by IHSNot for ResaleNo reproduction or networking permitted
14、 without license from IHS-,-,-MIL-S-50379 (MU) MIL-S-50379 12 9799706 0326854 2 M manufactured in the same manner, using the same materials, equipnicnt, pro- ccsscs, and procedures as used in regular production. All pai-Ls aiid materials, including packaging and packing, shall bc obtained from the s
15、ame source of supply as used in regular production. 4.2.1 Government testing.- When the Government is responsible for con- ducting first article approval tests, the contractor, prior to submitting the sample to the Government, shall inspect the sample to insure that it conforms to all the requiremen
16、ts of the contract and submit a record of this inspection with the sample, including certificates of conformance for materials. 4.2.2 Contractor testing.- When the contractor is responsible for con- ducting first article approval tests, the sample shall be inspected by the contractor for all the req
17、uirements of the contract. and a record of this inspection, including certificates of conformance for materials shall be submitted to the Government for approval. The Government reserves the right to witness the contractors inspection. The sample 4.3 Inspection provisions. 4.3.1 Submission of produc
18、t.- Unless otherwise specified by the con- tracting officer, inspection lot size, lot formation and presentation of lots shall be in accordance with “Submission of Product“ pi-ovisions of MIL-STD-105. 4.3.2 Examination and tests. 4.3.2.1 Components and subassemblies.- All components and subassemblie
19、s shall be inspected tn accordance with the inspection provisions contained in Supplementary Quallty Assurance Provisions (SQAP) listed in the techni- cal data package (TDP). In the absence of SQAPs the applicable Quality Assurance Provisions of MIL-F-13926 shall apply. related to Section 3 herein s
20、hall be performed on a single defect (indiv- ua1,characteristic) basis in accordance with MIL-STD-105 and the sampling plans specified in Tables I and II herein. Examination and tests for packaging, packing, and marking shall be in accordance with MIL-P-14232 and Section 5 herein, The tabulated clas
21、sification of defects shall con- stitute the minimum inspection to be performed by the supplier after first article approval and prior to Government acceptance or rejection by item or lot. Examination and tests TABLE I CM C S IF ICATION CRITICAL: NOXE REQUIREMENT TEST PROCEDURE MAJOR: AQL 1.0% Defec
22、tive 101. Telescope retention 3.3 4.6.1 XINOR: NONE WTE: ature of between 60“ and 90F. - The test in Table I shall be conducted at a standard ambient temper- 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.3.3 Acceptance and rejection.- Rejected
23、lots shall be screened for all defective characteristics. Removal or correction of defective units and resubmittance of rejected lots shall be in accordance with “Acceptance and Rejection“ as specified in MIL-STD-105. 4.4 Special sampling. 4.4.1 General.- Three sightunits shall be selected at random
24、 as a special camplins from each 10 produced. and tests in Table II. The samples shall meet the requirements TABLE II - NO. CHARACTERISTIC 301. Fabrication RJ3QUIREBENT TEST PROCEDURES 3.1, 3.1.1, & Applicable drawings 3.1.2 and specifications - Vi sua 1 302. General specifications 3.2 MIL-F-13926 -
25、 Visual NOTE: The examinations in Table II shall be conducted at a standard ambient temperature of between 60 and 90F. 4.4.2 Failure of sample.- Should any item of a special sampling fail to meet the specified test requirements, acceptance of the product will be suspended by the Government until nec
26、essary 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 maintain inspection equipment in accordance with the applicable requirements of
27、 MIL-1-45607. vides for Government furnished test equipment, supply and maintenance of test equipment shall be in accordance with the applicable requirements specified in MIL-1-45607. 4.5.1 Government furnished inspection equipment.- When the contract pro- 4.5.2 Contractor furnished inspection equip
28、ment. 4.5.2.1 Government design.- Unless otherwise specified in the contract, all inspection equipment specified by drawing number in specifications or SQAP forming a part of the contract shall be supplied by the contractor in accordance with technical data listed in the Tist of Inspection Docu- men
29、ts when provided with the Technical Data Package (TDP). 4.5.2.2 Contractor design.- The contractor shall provide inspection equip- ment compatible with the “Test Hethods and Procedures“ specified in 4.6 of this specification and with the “Component Inspection“ and “Test Facil- ities“ requirements of
30、 MIL-F-13926. normally considered to be within 10% of the product tolerance for which it is intended, this inherent: error ir, the test equipment design must be con- sidered as part of the prescribe9 product tolerance limit. Thus, concept, construction, materials, dimencioxs an6 tolerances used in t
31、he design of Since tolerance of test equipment is Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-50379 (MU) testequipment shall be so selected and controlled as to insure that the test equipment will reliably indicate acceptability of a produc
32、t which does not exceed 90% of the prescribed tolerance limit, and permit positive rejection when non-conforming. Construction shall be such as to facilitate routine calibration of test equipment. 4.6 Test methods and procedures., 4.6.1 Telescope retention.- The telescope clamping mechanism shall be
33、 tested in accordance with standard shop practices using a comercial torque wrench accurate to within 1/4 pound inch. shall be utilized to permit application of the torque wrench to the tele- scope body. The telescope shall show no movement when the specified tor- que is applied to the telescope bod
34、y in accordance with 3.3. An appropriate adapter 5. PREPARATION FOR DELIVERY 5.1 be in accordance with Packaging Data Sheet 10559698. tion shall be as specified in the procurement document., iackaging, packing and marking.- Packaging, packing and marking shall The level of protec- 6. NOTES 6.1 contr
35、ol instrument for laying mortars and rocket launchers in elevation and azimuth. Intended use.- The sightunit is used as an indirect fire 6.2 Ordering data.- Procurement documents should specify the following: (a) (b) (c) Applicable stock number. (d) (e) Title, number, and date of this specification.
36、 Selection of applicable levels of preservation, packaging, and packing. Applicable packaging data sheet number (see 5.1). Provisions for First Article testing. Custodian: Preparing activity: Amy - MU Army - Mu Project No. 1240 - A208 5 b Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
