FED STD H28 4 联邦标准 螺纹联邦服务标准第4节受控半径根螺纹UNJ SYMBOL(1978年3月31日

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时间:2023-03-17

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FED-STD-H28/4
31 March 1978
Superseding
NBS Handbook HZ% (1969)
Part I Section 4
FEDERALSTANDARD
SCREW-THREADSTANDARDSFOR FEDERALSERVICES
SECTIOil4
CONTROLLEDRAi)IUS ROOT SCREWTHREADS,
UilJSYMBOL
This standard was approved by the Commissioner Federal
Supply Service,
General Services Administration, for
the use of all Federal agencies.
U.S. GOVERNMm PRINTING OFFICE : 1978 - 261-423/1079
Orders for this publication are to be placed with
General
Services Administration,
acting as an agent for the Super-
intendent of Documents.
Single copies of this standard are
available at the GSA Business Service Centers in Boston, New
York, Atlanta, Chicago, Kansas City, MO, Fort Worth, San
Francisco, Los Angeles, and Seattle, or from the General
Services Administration,
Specifications and Consumer Infor-
mation Distribution Branch, Building 197, Washington Navy
Yard,
Washington, DC 20407.
Wce w cents each.
FSC THDS
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