1、MIL-U-219938 33 = 9799906 0303862 ! - MIL-W-21993B (OS) 19 October 1977 SUPERSEDING MIL-W-21993A (OS) 10 Januw 1967 MILITARY SPECIFICATION Wire Rope Assembly, Mooring, Mark 1 Mod 1 This specification is approved for use by the Naval Sea Systems Camand, Department of the Navy, and is available for us
2、e by Departments and Agencies of the Department of Defense. 1. SOOPE 1.1 Scope, This specification establishes the requirmnts for the procurement of the Wire Rope Assembly, Mooring, Mark 1 Mod 1, LD 549741. It is of one type and class. 2. ApPLICABrn DOCUMENTS 2.1 Issues of docmnts. The following doc
3、uments, of the issue in effect on the date of invitation for bids or request for proposal, form a part of this specification. STANDARDS MILITARY MIGSTD-105 MIGSTD-129 MIGSTD-454 Sampling Procedures and Tables for Inspection by Attributes Marking for Shipment and Storage Stanard General Requirements
4、for Electronic Equipment DRAWINGS NAVAL SEA SYSTEMS CCMMAND (Oode Ident lO001) LD 549741 Wire Rope Assembly, Mooring, Mask 1 Mod 1. Beneficial comnents (recomnendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Standardizatio
5、n Division (6111, Indian He, MD 20640 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. Cormianding Officer, Naval Ordnance Station, Provided by IHSNot for ResaleNo reproduction or networking permitted without
6、 license from IHS-,-,-MIGW-21993B( Os) DL 2424109 Container, Unit-Wire Fbpe Mark 1 Type Assembly. 2428610 Wire Rope Assembly, boring, Mark 1, Mod 1 All drawing numbers referenced herein are listed on LD 549741 unless otherwise designated. PUBLICATIONS NAVAL SEA SYSTEMS CDMMAND (Code Ident 10001) OD
7、10511 Nonmagnetic Testing with the Test Set bark 115 hlod 4 & 5 (Copies of specifications, standards, drawings and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the mntracting officer). 2.2 Othe
8、r publication. The following document fom a part of this Unless otherwise indicated, specification to the extent specified herein. the issue in effect on the date of invitation for bids or request for proposa1 shall apply. NATIONAL BUREAU OF STANDARDS PUBLICATICN HAMBooK H28 Screw-Thread Standards f
9、or Federal Services (Application for copies should be addressed to the Superintendent of Dxuments, Government Printing ffice, iaShington, D. C. 20402). 3.1 Description. The Wire Fbpe Assembly, Wring, bWk 1 Mod 1, is a nonmagnetic, phosphor bronze, two-component cable with the necessary fittings to a
10、ttach the cable for end use. 3.2 First article sample. Unless otherwise specified in the contract or order, (see 6.2) a first article sample of five wire rope assemblies shall be mufactured and prepared for delivery wing the methods and procedures proposed for the production lot. The sample shall be
11、 prepared for delivery in accordance with section 5 herein and will be tested for approval as specified in section 4 herein. The sample is for the purpose of determining that, prior to starting production, the contractors production methods are capable of pducing items that comply with this specific
12、ation and the design and may be waived by the contracting officer if satisfactory production has been recently accomplished. 3.3 General requirements: 3.3.1 lbbrication. The wire rope assembly shall be manufactured in accordance with D 549741 and as specified herein. Provided by IHSNot for ResaleNo
13、reproduction or networking permitted without license from IHS-,-,-MIL-W-21793B 33 7779906 0303864 3 I MIL-W-21993B (06) 3.3.2 Interchangeability. Component parts of assembled units (unless otherwise specified on the applicable drawings) fabricated in accordance with applicable drawings shall be inte
14、rchangeable and shall assemble with mating components of the unit without selection for fit or performance. accordance with the National Bureau of Standards Handbook H28. 3.3.3 Threads. Unless otherwise specified, all threads shall be in 3.4 Magnetic characteristic. Te static mgnetic effect of the w
15、ire mpe assembly shall not be great enough to cause a total change in flux density of the background magnetic field of mre than 0.10 milligauss (peak to trough). 3.5 Cleanup. Prior to and after final ascembly, all parts, components and the assembly shall be thoroughly cleaned of metal chips and othe
16、r foreign matter. Burrs and sharp edges shall be ranoved. 3.6 IVorkmanship. Workmanship shall be in accordance with Requirement 9 of MIL-STD-454. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract, the contractor is responsible for the perfo
17、rmance of all inspection requiremnts as specified herein. contract, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspe
18、ctions set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirement s. Except as othenvise specified in the 4.2 Classification of inspection. Inspection of wire rope assembly shall be classified as follows: a. b. c. Firs
19、t article inspection (see 4.4) Quality conformance inspection (see 4.5) Periodic production inspection (see 4.6) 4.3 Test equipment. The followhg item of test equiprent is required to perform the tests required in this specification: a. Test Set Mark 115 type with Adapter Mark 36 Mod O and Magnetic
20、Effects Test Stand Mark 9 bbd O (Government furnished). 4.4 First article inspection, 4.4.1 First article testing. The first article sample of five (5) Further production of the wire rope assembly by the wire rope assemblies (see 3.2) shall be subjected to the examinations and tests detailed in 4.7
21、(see Table I) at an activity designated by the procuring activity. supplier, prior to approval of the sample, shall be at the suppliers risk. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.4.2 First article sample approval. First article sanpile
22、 approval will be granted when the Government testing activity, through testing and subsequent analysis of the test results, is assured of contractor conformance to the contract technical requiremnts. at the option of the Government based on analysis of detected defects. first article sample my be d
23、isapproved when either nonconforming character- istics or unauthorized materials are found. Conditional acceptance may be granted A 4.5 Quality conformance inspection (see notes, Table I). 4.5.1 10% inspection. Each unit shall be subjected to the examinations and test (designated as 10%) in 4.7.1 an
24、d 4.7.2. or mre defects shall be cause for rejecting the unit. Any unit containing one 4.5.2 Sampling. The tests of 4.7.3 (designated as sampling) shall be conducted on a random sample of assemblies selected from each production of 1.0 percent. Failure of the sqle to mt this requirement shall cause
25、the lot to be rejected. bt composition shall be in accordance with MIGSTD-105, Section 5. 4.6 Periodic production inspection. Periodic prouction tests consisting of the tests of 4.7 (as specified in Table I), shall be conducted by a designated Governirient Testing activity on a random sample of two
26、packaged wire rope assemblies, unless otherwise specified (see 6.2.h), selected from each production lot offered for acceptance. fails to pass any periodic production test, such failure shall be cause for rejection of the periodic sample and the lot it represents. When a unit 4.7 Examination and tes
27、t methods. 4.7.1 Preparation for delivery (1%). nie packaging shall be examined to detemine conformance to section 5 herein. 4.7.2 Visual examination (la). Each wire rope assembly shall be visually examined in accordance with drawing 2428610 to determine cmpliance with this specification and the app
28、licable drawings, Ebmination of the assembly in accordance with drawing 2428610 shall not relieve the contractor of the responsibility for meeting the requirements of other drawings listed thereon. 4.7.3 Magnetic effects testing (sampling). Perform the rrtagnetic effects test on the wire rope assemb
29、ly in accordance with Test Method 1, OD 10511. in section 5. me test face shall be one of the large, open-side faces of the unit container. the test face of the container shall be 5 k 1/8 inches. nie rate at which the container shall be rotated while conducting the test of CB) 10511, Method 1, orien
30、tation (C), shall be between 5 and 15 seconds per revolution. Verify that the assembly does not produce a magnetic signal exceeding 0.10 milligauss. Perform the test with the assanbly packaged as specified The distance from the center of the magnetometer to 4 (7 3 Provided by IHSNot for ResaleNo rep
31、roduction or networking permitted without license from IHS-,-,-3Ob 0303866 5 m MIL-U-23773B 33 MIL-W-2 1993% ( CS) xw w .a xx x 9 91 xw w a, I# v1 d O c, m t.: 4 H Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-5. PACKAGING 5.1 F!t-eservat ion-packa
32、ging , Preservat ion-packaging shall be level A, 5.1.1 Level A. in accordance with DL 2424109 unless otherwise specified in the contract or order. Each wire rope assanbly shall be individually packaged 5.2 Marking. In addition to any special marking required by the contract or order all marking shal
33、l be in accordance with MIL-SiD-129. 6. NOTES 6.1 Intended use. The wire rope assembly is intended for use in underwater mines to provide a nonmagnetic link between a magnetic mine and the steel mring cable. 6,2 Ordering data. Procurement documents should specify the following: a. Title, nwiber and
34、date of this specification. b. c. Number of first articles required (see 3.2). Test equipment to be loaned by the Government, and the terms Activity to perform first article testing. under which it is loaned (see 4.3a). d. e. Activity to perform periodic production inspection. f. Liot size for sanpl
35、ing purposes, if one mnths scheduled g. Special marking when required. production is not acceptable (see 6.3). h. Numb& of units in the periodic sample if other than specified (see 4,6). 1 order, lot sim shall mean one months scheduled production, of MIL-SITk105 for lot composition. assembly specifi
36、ed herein are located at the Naval ?,line Ehgineering Facility, Yorktown, VA 23691. revision to identify changes with respect to the previous issue, due to the extent of the changes. 6.3 i&. Unless otherwise specified in the contract or purchase See section 5 6.4 Design agency. Tfie design and techn
37、ical cognizance for the 6.5 Changes from previous issue. Asterisks are not used in this Custadian: NAVY-os Preparing a&ivitg: Ulm-a3 Project Xmber 1350-NO34 *V.S. GOVERNMENT PRINTING OFFICE: 1977-703-122/6647 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
