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    DLA FED-STD-H28 18 B-1991 SCREW-THREAD STANDARDS FOR FEDERAL SERVICES SECTION 18 PHOTOGRAPHIC EQUIPMENT THREADS《联邦服务 第18章 摄影器材螺纹的螺纹标准》.pdf

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    DLA FED-STD-H28 18 B-1991 SCREW-THREAD STANDARDS FOR FEDERAL SERVICES SECTION 18 PHOTOGRAPHIC EQUIPMENT THREADS《联邦服务 第18章 摄影器材螺纹的螺纹标准》.pdf

    1、FEDERAL STANDARD FED-CTD-H28/18B 20 maust 1991 SUPERSEDING FED-ST-H2 8/18A 10 May 1985 SCREW-THREAD STANDARDS FOR FEDERAL SERVICES SECTION 18 PHOTOGRAPHIC EQUIPMENT -THREADS TES standard was apprwed by the Canmissioner, Federal Suwy Service, General Services Administration, for the use of all Federa

    2、l agencies. DISTRIBVP ION E3nwEWm 4 . pgproved for public release; distribution is O unlimitecl. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 b -. FED-STD-HZ/LB TH 9999977 000bb85 3 rr This Federal Standard is issued in loose-leaf form to permit

    3、 the insertion or mal of new or revised pages and sections. All users of Federal Standards should keep them up to date by inserting revised or new pages as issued and renoring superseded and cancelled pages. be nunhred consecutively and will bear the date of issuance. Notices should be retained and

    4、filed in front of the standard until such tims as they are superseded by a reissue of the entire standard. New and revised pages will be issued under Change Notices which will Change mmm This section was developed in order to provide photographic equiprent thread data for the Federal Services. FED-S

    5、TD-H28/18Awas prepared by the Defense Industrial Supply Center (DLA-IS) with the following significant changes fmthe previous issue: (1) connection details were replaced by references to controlling standards; (2) threads for attaching munted lenses, which originally appeared in the withdrawn Airier

    6、ican National Standard ANSI PH3.10-1954, were renwrved; (3) attachmsnt thread sizes for lens accessories, which originally appeared in the superseded mrican National Standard ANSI PH3.12-1953, -re revised to agree with ANSI PH3.103-1983; (4) tapered threads for shutter cable release tip/sccket, whic

    7、h originally appeared in the superseded American National Standard ANSI PH3.23-1950, were revised to agree with ANSI PH3.107-1983 (ANSIflS 6053-1979); (5) straight threads for shutter cable release tip/socket, which originally am in the withdrawn Arrierican National Standad ANSI PH3.24-1950, were re

    8、mved; (6) .added lens munt thread data for 16m and 8n-m mtion picture cameras. changes include the following: (1) inclusion of 4 additional lens accessory attachment sizes fromthe 1987 edition of the International Standard, Is0 1948; (2) mal of the mating external thread tolerance 6g from the bocEy

    9、of the standard thread table to a table footnote; (3) redesignation of docurent ANSI PH22.76 to the Smiety of mtion Picture and Television replacemnt, ANSI/sMpTE 76. FED-STD-H28/18B is an updated version of EED-STD-H28/18A. Significant ii Provided by IHSNot for ResaleNo reproduction or networking pe

    10、rmitted without license from IHS-,-,-1p SDIa 18 - -HIC EQUIPMENT THREADC 1. Scorn. This section describes the screw threads cmnly used on photographic ecpiwnt in order to prarriote interchangeable connections. 2. Refereitced documents. 2.1 telephone (202) 708-9205. (Federal Gwerrinient activities my

    11、 obtain copies of Federal Standardi. zation docunients, and the Index of Federal Specifications, Standards, and Comnercial item Descriptions fm established distribution points in their agencies.) 2.2 ther iniblications. The following docurrients form a part of this standard to the extent specified h

    12、erein. identified, the issue in effect on date of invitation for bids or request for proposal .shall amly. unless a specific issue is Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FED-STD-H28/1B TH rn 9999977 0006687 7 rn e- L FED-ST-H28/18B c mric

    13、an National standards ANSI PH3.101 - Photography (canieras) - Tripl connections for Anierican camras (1/4-inCh-20 thread) ANSI PH3.102 - Photography (canieras) - Tripcd connections for heavy-duty or imported camras (3/8-im=h-16 thread with adapter for 1/4-inCh-20 tripod ANSI PH3.103 - Photography (c

    14、anieras) - LRns barrel attachmnt threads for lens accessories ANSI PH3.107 - Phtography-(canieras) - Shutter cable release and socket-dinrsnsions ANSI/sMpTE 76 - mtion pictm cmras - threadd lens munts - 16m and 8nm canieras screws) (mlication for copies should be addressed to the American National S

    15、tandards Institute, 11 West 42nd Street, New York, NY 10036.) 3. Definitions. Screw thread tem applicable to this standard are defined lil FED-sTD-H28/1. 4. Wmral recniirenien ts. Not applicable. 5. Detailed rnl j-remnts. 5.1 Standard threads. Standard threads for photographic equipnt are listed in

    16、Table XVIII.l. 5.2 Screw thread accerJtab ility. shall be in accordarice with FED%TD-H28/20,. shall be specified in accordance with that docunient. u Inspection iriethods for acceptability The required gaging system lJ Gaging system are defhed =- FED-STD-HZB/LBB TH m 9999977 0006690 7 m 5 i. FED-s“D

    17、-H28/18B O BASIC msrNE DIMENSICNS THREAD FORM DIMENSIONS MAJOR DIAMEITER d,D = 3.400 PITCH = 0.5 PITCH D- d2,D2 = 3.082 MINOR DIAMEZER dl,D1 = 2.870 F“DAMEBTE RELEACE TIP (MTERNp;L TAPER THREAD) ANDSOCKET (l“&TAl?mTHREAD) NOTE: All dirriensions are in millimeters unless indicated otherwise, 5 Provid

    18、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FED-STD-HZ/lB TH 9999977 O006693 9 MILITARY INTERESTS: custodians: -AR Navy - AS Air Force - 99 Review Wtivities : ANIY - ER, MI DLA - GS Air Force - 15, 82 CVL AGEN3 CRDINIITING ?CTMTY: GSA - 7FxE PREPARING PCTMTY: DLA - IS (DoD Project THW-0085) 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-


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