1、FED-STD-H28A28 December 1994SUPERSEDINGFED-STD-H2831 March 1978FEDERAL STANDARDSCREW-THREAD STANDARDS FOR FEDERAL SERVICES.This standard was approved by the Commissioner, Federal SupplyService, General Services Administration, for the use of allFederal Agencies.Beneficial comments (recommendations,
2、addition, deletions) andpertinent data which may be of use in improving this document should beaddressed to: Defense Industrial Supply Center (Code DISC-ETT) 700 RobbinsAvenue, Philadelphia, PA 19111-5096 by using the self addressedStandardization Document Improvement Proposal (DD Form 1426) appeari
3、ng at theend of this document or by letter.AMSC N/A AREA THDSDISTRIBUTION STATEMENTA. Approved for public release; distribution isunlimitedProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FED-STD”H28A28 December 1994INFORMATION SHEET ON FEDERAL STANDA
4、RDSThis Federal Standard is issued in loose-leaf form to permit the insertion or removal of new orrevised pages and sections.All users of Federal Standards should keep them up to date by inserting revised or new pages asissued and removing superseded and cancelled pages.New and revised pages will be
5、 issued under Change Notices which will be numbered consecutivelyand will bear the date of issuance. Change Notices should be retained and filed in front of the Standard untilsuch time as they are superseded by a reissue of the entire Standard.FOREWORDThis Standard was developed to provide dimension
6、al data requirements for screw threadsincluding, as necessary, those relating to gages and gaging systems as well as other itiormation associatedwith the purchasehse of interchangeable threaded parts by Federal Government agencies. So far aspracticable, these data are intended to conform to generall
7、y accepted commercial practice, although certainspecial requirements of the Federal Services may necessitate the inclusion of some which are not generallyapplicable outside the Federal Government. References are cited throughout the text to standards approvedby the American National Standards Instit
8、ute (ANSI) and to such other published standards as are inagreement with Federal Services requirements.FED-STD-H28, together with its detailed standard sections FED-STD-H28/1, FED-STD-H28/2,etc., superseded Handbook H28 Parts I, II and 111.FED-STD-H28A was prepared by the Defense Industrial Supply C
9、enter (DLA-IS) and is anupdate of FED-STD-H28 dated 31 March 1978 as modified by Change Notices 1, 2 and 3.iiProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FED-STD-H28A28 December 19941. Scope. Ttisstandard includes the basic screw thread dimensiond
10、 andaueptabilityrequirements for common screw thread forms and applications. Design and use information are alsoprovided when necesstuy. Specific requirements for particular screw threads, gages, etc., are covered bydetailed standard sections.2.1 Government wblications. The issues of the following d
11、ocuments in effect on the date ofinvitation for bids or request for proposal form a part of this standard to the extent specified herein.FEDER4L STANDARDSFED-STD-H28/l - Nomenclature, Definitions, and Letter Symbols for Screw ThreadsFED-STD-H28/2 - Unified Inch Screw Threads -UN and UNR Thread Forms
12、FED-STD-H28/3 - CANCELED AND SUPERSEDED by FED-STD-H28/2FED-STD-H28/4 - Controlled Radius Root Screw Threads, UNJ SymbolFED-STD-H28/5 - Unified Miniature Screw ThreadsFED-STD-H28/6 - Gages and Gaging for Unified Screw Threads -UN and UNR ThreadFormsFED-STD-H28/7 - Pipe Threads, General PurposeFED-ST
13、D-H28/8 - Dseal Pipe ThreadsFED-STD-H28/9 - Gas Cylinder Valve Outlet and Inlet ThreadsFED-STD-H28/10 - American National Hose Coupling and Fire-Hose Coupling ThreadsFED-STD-H28/l 1- Hose Connections for Welding and Cutting EquipmentFED-STD-H28/12 - Acme ThreadsFED-STD-H28/13 - Stub Acme ThreadsFED-
14、STD-H28/14 - Buttress Screw Threads - 7/450Flank AnglesFED-STD-H28/l 5- Rolled Threads for Screw-Shells for Electric Lampholders and LampBasesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FED-STD-H28A28 December 1994FED-STD-H28/16 - Microscope Obje
15、ctive and Nosepiece Threads, 0.8000- 36AM0FED-STD-H28/l 7- Surveying Instrument Mounting ThreadsFED-STD-H28/l 8- Photographic Equipment ThreadsFED-STD-H28/19 - Miscellaneous ThreadsFED-STD-H28/20 - Inspection Methods for Acceptability of UN, UNJ, M and MJScrew-ThreadsFED-STD-H28/21 - Metric Screw-Th
16、readsFED-STD-H28/22 - Gages and Gaging for Metric Screw Threads - M and MJ Thread FormsFED-STD-H28/23 - Class 5 Interference-Fit Screw ThreadsMILITARY STANDARDSMIL-S-8879 - Screw Threads, Controlled Radius Root Whh Increased Minor Diameter,General Specification forMILITARY HANDBOOKSMIL-HDBK-60 - Thr
17、eaded Fasteners - Tightening to Proper Tension(Copies of the above documents are available from the Standardization Document Order Desk,Building 4D, 700 Robbins Avenue, Philadelphi PA 19111-5094.)2.2 Other tmblications. The following documents forma part of this standard to the extentspecified herei
18、n. Unless a specific issue is identified, the issue in effect on date of invitation for bids orrequest for proposal shall apply.AMERICAN NATIONAL STANDARDSAMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) PUBLICATIONSASME B1. 1- Unified Inch Screw Threads (UN and UNR Thread Form)Provided by IHSNot for
19、 ResaleNo reproduction or networking permitted without license from IHS-,-,-FED-STD-H28A28 December 1994ANSI/ASME B1.2- Gages and Gaging for Unified Inch Screw ThreadsASME B 1.3M - Screw Thread Gaging Systems for Dimensional Acceptability - Inch andMetric Screw Threads (UN, UNJ, M, and MJ)ASME./ANSI
20、 B 1.5- Acme Screw ThreadsANSI/ASME B 1.7M - Nomenclature, Definitions, and Letter Symbols for Screw ThreadsASME/ANSI B1.8- Stub Acme Screw ThreadsANSI B 1.9- Buttress Inch Screw ThreadsASA B 1.10- Unified Miniature Screw ThreadsASA B1. 11- Microscope Objective ThreadASME/ANSI B1.12- Class 5 Interfe
21、rence-Fit ThreadANSI/ASME B 1.13M - Metric Screw Threads - M ProfileANSI/ASME B1.16M - Gages and Gaging for Metric M Screw ThreadsANSI/ASME B1.20.1 - Pipe Threads, General Purpose (Inch)ANSI B 1.20.3- Dryseal Pipe Threads (Inch)ASME B1 .20.5 - Gaging for Dryseal Pipe Threads (Inch)ASME B 1.20.7- Hos
22、e Coupling Screw Threads (Inch)ANSI B1 .21M - Metric Screw Threads - MJ ProfileANSI/ASME B 1.22M - Gages and Gaging for MJ Series Metric Screw ThreadsANSI B 18.2.1- Square and Hex Bolts and Screws, Inch SeriesASMIYANSI B18.2.2 - Square and Hex Nuts (Inch Series)Provided by IHSNot for ResaleNo reprod
23、uction or networking permitted without license from IHS-,-,-FED-STD-H28A28 December 1994ANSI B 18.6.2- Slotted Head Cap Screws, Square Head Set Screws, and Slotted HeadlessSet ScrewsANSI B 18.6.3- Machine Screws and Machine Screw NutsANSI B 18.6.4- Thread Forming and Thread Cutting Tapping Screws an
24、d Metallic DriveScrews (Inch Series)AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) PUBLICATIONSANSI C8 1.61- Electrical Lamp BasesANSI C8 1.62- Lampholders for Electric LampsANSI C8 1.63- Gauges for Electric Lamp Bases and LamphokiersANSI PH3. 101- Photography (Cameras) - Tripod Connections for Americ
25、an Cameras(1/4-Inch-20 Thread)ANSI PH3. 102- Photography (Cameras) - Tripod Connections for Heavy-Duty orImported Cameras 3/8-Inch- 16 Thread With Adapter for l/4-Inch-20Tripod Screws)ANSI PH3. 103- Photography (Cameras) - Lens Barrel Attachment Threads for LensAccessoriesANSI PH3. 107- Photography
26、(Cameras) - Shutter Cable Release and Socket - DimensionsSOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS CNVIPTE)PUBLICATIONANSI/SMPTE 76- Motion-Picture Cameras -16- and 8-mm Threaded Lens MountsNATIONAL FIRE PROTECTION ASSOCIATION PUBLICATIONNFPA 1963- Screw Threads and Gaskets for Fire Hose Co
27、nnectionsCOMPRESSED GAS ASSOCIATION (CGA) PUBLICATIONANSI/CSA/CGA V-1- Compressed Gas Cylinder Valve Outlet and InIet Connections4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FED-STD-H28A28 December 1994(Copies of the above documents are available
28、 from the American National Standards Institute,11 West 42nd Street, New York, NY 10036-80020r fromthe applicable publisher:American Society of Mechanical Engineers, 345 East 47th Street, New York NY 10017-2392orSociety of Motion Picture and Television Engineers, 595 West Hartsdale Avenue, White Pla
29、ins, NY10607-1824orNational Fire Protection Association, One Batterymarch Park, Quincy, MA 02169-7473Compressed Gas Association, 1725 Jefferson Davis ighway, Arlington, VA 22202-4102)COMPRESSED GAS ASSOCIATION PUBLICATIONCGA E-1 - Standard Connections for Regulator Outlets, Torches and Fitted Hose f
30、orWelding and Cutting EquipmentCopies of the above document are available from the Compressed Gas Associatio 1725 JeffersonDavis Highway, Arlingto VA 22202-4 102)3. Definitions. The terms applicable to FED-STD-H28 are in accordance with FED-STD-H28/land the other individual FED-STD-H28 standard sect
31、ions listed in 2.1.4. General reauirements. The applicable FED-STD-H28 section standards shall be selected fromthe listing in 2.1.5. Detailed requirements. Not applicable.6. Notes .6.1 Related indus standards. The following is a listing of industry standards related to, but notnecessarily identical
32、to, the subjects covered in the section standards of FED-STD-H28. Industry standardsincorporated, by reference, in the section standards, are indicated by an asterisk (*).FED-STD-H28/l - ANSI/ASME B1.7M*FED-STD-H28/2 - ASME B 1.1*FED-STD-H28/4 - ASME B 1.15 (Not issued as of 15 December 1994)5Provid
33、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FED-STD-H28A28 December 1994FED-STD-H28/5 - ANSI B 1.10FED-STD-H28/6 - ANSI/ASME B 1.2*FED-STD-H.28/7 - ANSI/ASME B 1.20.1*FED-STD-H28/8 - ANSI B 1.20.3* and ASME B 1.20.5*FED-STD-H28/9 - ANSI/CSA/CGA V-1*FED
34、-STD-H28/10- ASME B 1.20.7* and NFPA 1963*FED-STD-H28/l 1- CGA E- 1FED-STD-H28/l 2- ASME/ANSI B 1.5 *FED-STD-H28/13 - ASIWE/ANSIB1.8*FED-STD-H28/14 - ANSI B1.9*FED-STD-H28/15 - ANSI C81.61*, C81.62*, C81,63*FED-STD-H28/16 - ANSI B1 .11FED-sTD-H28/l 7-FED-STD-H28/18 - ANSI PH3. 101*, 102*, 103*, 107*
35、 and ANSI/SMPTE 76*FED-STD-H28/19 -FED-STD-H28/20 - ASME B1.3M*FED-STD-H28/21 - ANSI/ASM13B1. 13M* and ANSI B1.21M*FED-STD-H28/22 - ANSI/ASIvlJ3B 1.16M*, B 1.22M*FED-STD-H28/23 - ASME/ANSI B 1.12*6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FED-S
36、TD-H28A28 December 19946.2 Atmendices. The following is a list of appendices which had been part of FED- STD-H28 orthe cancelled Handbook H28. Their disposition and action date are indicated.Al - American National Form of Thread Series for Bolts, Machine Screws, Nuts, Tapped Holes andGeneral Applica
37、tions (Superseded 20 August 1991 by FED-STD-H28/2)A2 - American National Screw Threads of Special Diameters, Pitches, and Lengths of Engagement(Deleted by the 1969 Issue of Handbook H28)A3 - Recommended Hole Size Limits Before Threading and Tap Drill Sizes (Superseded 20 April1984 by FED-STD-H28/2)A
38、4 - Methods of Wire Measurements of Pitch Diameter of 60 Threads (Superseded 5 March 1985 byFED-STD-H28/6, /7, and /8)AS - Design of Special Threads (Superseded 20 April 1984 by FED-STD-H28/2)A6 - References (Deleted by the 1969 issue of Handbook H28)A7 - Supplementtuy Pipe Thread Information (Super
39、seded 25 October 1984 by FED-STD-H28/7and /8A8 - Geometry of Taper Screw Threads (Deleted by this Issue of FED-STD-H28)A9 - Extent of Usage of the American National Fire-Hose Coupling Threads on Couplings andNipples Used With 2 1/2 Inch Nominal Size Fire Hose (Cancelled 21 June 1993 by FED-STD-H28I1
40、OA1O- Wrench Openings (Superseded 20 January 1989- see ANSI B18.2. 1, ASME/ANSI B18.2.2,ANSI B18.6.3, and ANSI B18.6.4)Al 1- Class 5 Interference-Fit Threads (Superseded 20 January 1989 by FED-STD-H28/23)A12 - The Tightening of Threaded Fasteners to Proper Tension (Superseded 12 March 1990 by MJL-HD
41、BK-60)Al 3- Three-Wire Method of Measurement of Pitch Diameter of 29 Acme, 29 Stub Acme andButtress Threads (Superseded 20 September 1989 by FED-STD-H28/12, /13 and /14)A14 - Metric Screw Thread Standards (Superseded31 May 1977 by FED-STD-H28/21)7Provided by IHSNot for ResaleNo reproduction or netwo
42、rking permitted without license from IHS-,-,-FED-STD-H28A28 December 1994MILITARY INTERESTS:Custodians:Army - ARNavy - ASAir Force -99CIVIL AGENCY COORDINATION ACTIVITY:GSA - 7FXEPREPARING ACTIVITY:DLA -IS(DoD Project THDS-O1O2)Provided by IHSNot for ResaleNo reproduction or networking permitted wit
43、hout license from IHS-,-,-STANDARDIZATIONDOCUMENTIMPROVEMENTPROPOSALMJRUCTIONS1. The preparing activity must complele blocks 1, 2, 3, ond 8. In block 1, both he documenl number and revision letter should be given.2. The submitler of this form must complele blocks 4,5, 6, ond 7.3. The preparing oclid
44、y musl provide o reply wilhin 30 cloys from receipt of Ihe form.NOTE: This form moy not be used to request copies of documents, nor 10 requesl woivers, or clorificolion of requirements on currenlcontrocts. Comments submitted on Ibis form do not conslutile or imply oulhorizolion to woive ony portion
45、of the referenced document(s)or to emend controctuol requirements.3. DOCUMINT TIT1 SCREW-THREAD STANDARDS FOR FEDERAL SERVICES4. NATUREOF CH4NGE (Identify porogroph number ond include proposed rewrite, if possible. Attoch sheets if needed.)5. REASON FOR RECOMMENDATIONC. ADDRESS (include Zi Code)WENS
46、f tNt)USffRU.SUPPLYCENTERIF YOU DO NOT RCEtVE A REPLY WITHIN45 DAYS, CONTACT:Defense Ouolity ond Stondordizotion Office700 fNXXIJNSAWNUE, B1OG, 3 (COOE DISC-UT)F141ACKlm PA 19111-S0965203 leesbura Pike, Suite 1403, Foils Church, VA 22041-3466Teleohone (703) 756-2340 AUTOVON 28!3-2340DD Form 1426, OCT 89 Previous edilions are obsolele. 198/290Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
