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FED-STD-H28-2 Revision B:1991

Current

Current

The latest, up-to-date edition.

Screw-Thread Standards for Federal Services Section 2 Unified Inch Screw Threads- UN and UNR Thread Forms

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PDF

Published date

20-08-1991

€17.95
Excluding VAT

Specifies unified UN and UNR inch screw threads. Coverage includes: preferred non standard diameters; diameter pitch combinations; thread class selection; thread allowance and tolerance; completely formed threads; incomplete formed threads; gages and gaging; preferred non standard diameters. Also contains detailed tables and diagrams.

DevelopmentNote
Supersedes FED STD H28/3. B NOTICE 1 - Notice of Validation. (10/2001) B NOTICE 2 - Notice of Validation. (11/2006)
DocumentType
Standard
Pages
78
ProductNote
NEW CHILD NOT 3 2019 IS NOW ADDED.
PublisherName
US Military Specs/Standards/Handbooks
Status
Current
Supersedes

This section provides the standard for unified inch screw threads to be used by the Federal Services.

MIL S 81963 : B SERVO-COMPONENT, PRECISION INSTRUMENT, ROTATING, COMMON REQUIREMENTS AND TESTS, GENERAL SPECIFICATION FOR
NASM8846:2011 INSERT, SCREW-THREAD, HELICAL COIL
MIL-E-16400 Revision H:1987 ELECTRONIC, INTERIOR COMMUNICATIONS AND NAVIGATION EQUIPMENT, NAVAL SHIP AND SHORE, GENERAL SPECIFICATION FOR
MIL-PRF-19207 Revision G:2013 Fuseholders, Extractor Post Type, Blown Fuse, Indicating and Nonindicating, General Specification for
MS39135 Revision G:2010 Nut, Hose Coupling, Automotive Air Brake Hose Adapter
MIL-R-22368 Revision D:1980 REPAIR KIT AND REPAIR KIT COMPONENTS, FOR COLLAPSIBLE FABRIC TANKS AND BOATS
MIL-DTL-10884 Revision H:2005 FASTENERS, SNAP
MIL-H-21367 Revision E:1985 HULL FITTINGS: CONNECTORS, ADAPTER, END SEALS, AND STUFFING TUBES FOR FLEXIBLE, SOLID-DIELECTRIC, RADIO-FREQUENCY CABLES
MIL-DTL-2726-6 Revision C:2006 Receptacle, Plug, Electrical, 3 - Pin Grounded, 40 - Ampere, 125 - Volt, Alternating Current (Symbol No. 1143.1)
MIL E 2036 : D ENCLOSURE FOR ELECTRIC AND ELECTRONIC EQUIPMENT, NAVAL SHIPBOARD
MIL S 15743 : C SWITCH, ROTARY, ENCLOSED
MIL-T-24270 Revision B:1983 THERMOWELLS FOR THERMOMETERS AND ELECTRICAL TEMPERATURE SENSORS GENERAL SPECIFICATION FOR
MIL-DTL-2726-1 Revision C:2006 Receptacle, Plug, Electrical, 2-Pin, 40-Ampere, 125-Volt, Direct Current (Symbol No. 715.1)
MIL-DTL-24231 Revision E:2013 Connectors, Plugs, Receptacles, Adapters, Hull Inserts, and Hull Insert Plugs, Pressure-Proof, General Specification for
MIL-DTL-2726-52 Revision B:2005 Receptacle, Plug, Electrical, 3-Pin Grounded, 10-Ampere, 450-Volt, 60-Hertz, Single Phase (Symbol No. 1257)
MS51532 Revision B:1988 FITTING, HYDRAULIC TUBE, FLARED 37 DEGREE AND FLARELESS, STEEL; CAP, TUBE, 37 DEGREE FLARED
MIL-DTL-81963 Revision C:2011 SERVOCOMPONENTS, PRECISION INSTRUMENT, ROTATING, COMMON REQUIREMENTS AND TESTS, GENERAL SPECIFICATION FOR
MIL-DTL-45912 Revision B:2013 BOLT, SELF-LOCKING, HEXAGON HEAD, STEEL
MS9193 Revision A:2010 NIPPLE, TUBE - SAE-AMS5639, BOSS
MIL-PRF-83419 Revision F:2016 ALTIMETER, SERVO CONTROLLED, AUTOMATIC PRESSURE STANDBY
SAE AS 4723 : 2012 INSERT, SCREW THREAD, SELF-LOCKING, UNS S66286, KEY LOCKED, PLASTIC SELF LOCKING DEVICE, SOLID FILM LUBRICANT, PROCUREMENT SPECIFICATION FOR
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PREN 3545-005 : 200P2 AEROSPACE SERIES - CONNECTORS, ELECTRICAL, RECTANGULAR, WITH SEALED AND NON-SEALED REAR, PLASTIC HOUSING, LOCKING DEVICE, OPERATING TEMPERATURES -55 DEGREES C TO 175 DEGREES C - PART 005: FEMALE CODING AND ATTACHMENT SYSTEM FOR MOUNTING ON FREE HOUSING (PLUG) - PRODUCT STANDARD
SAE AS1710D Coupling, Fuel, Flexible, Variable Cavity, Threaded Type With Ferrules
NASM 35206 : 2004 SCREW, MACHINE, PAN HEAD, CRUCIFORM RECESS, CARBON STEEL, UNC-2A
MIL-N-45938 Revision A:1995 NUT, PLAIN, CLINCH AND NUT, SEL-LOCKING, CLINCH GENERAL SPECIFICATION FOR
MIL-E-24269 Revision B:1988 EXTINGUISHER, FIRE, CARBON DIOXIDE, 15 POUND, PORTABLE, PERMANENT SHUTOFF, NAVY SHIPBOARD USE
MIL-S-21472 Revision C:1988 SCREW, SHOULDER, HEXAGON SOCKET-HEAD AND SLOTTED-HEAD GENERAL SPECIFICATION FOR
MIL-S-45909 Revision C:1989 STUD, LOCKED IN - RING LOCKED SERRATED
MIL-DTL-15743 Revision F:2017 SWITCHES, ROTARY, ENCLOSED
MIL-DTL-13735 Revision H:2017 Switches, Toggle: 28 Volt DC
MIL I 45910 : C INSERT, SCREW THREAD LOCKED IN & RING LOCKED 1 SERRATED GENERAL SPECIFICATION FOR
MIL-DTL-917 Revision F:2014 ELECTRIC POWER EQUIPMENT, BASIC REQUIREMENTS FOR
MIL-S-63540 Revision C:1995 STUD, SELF-CLINCHING GENERAL SPECIFICATION FOR
MIL-DTL-24652 Revision A:2016 Extinguisher, Fire, Aqueous Film Forming Foam (AFFF), 2.5-Gallon
FF-S-85 Revision D:2005 Screw, Cap, Slotted and Hexagon Head
MIL-I-8846 Revision D:1994 INSERT, SCREW THREAD, HELICAL COIL
MIL-B-45908 Revision B:1985 BOLT, EYE, GENERAL SPECIFICATION FOR
MIL-D-28728 Revision B:1986 DIAL, CONTROL, MULTI-TURN COUNTERS, GENERAL SPECIFICATION FOR
MIL-S-45915 Revision A:1967 STUD, LOCKED IN - KEY LOCKED - GENERAL SPECIFICATION FOR
MIL-B-28658 Revision E:1991 BUILDING COMPONENTS, PANELIZED, PREFABRICATED, READY-CUT, RELOCATABLE
MIL-DTL-24646 Revision C:2015 FUSE BOXES, GENERAL SPECIFICATION FOR
MIL-DTL-2726 Revision C:2006 Receptacle, Receptacle Plugs, Switch and Receptacles, and Outlets (Electrical), General Specification for
MS39207 Revision H:2018 Elbows, Tube - Safety Sleeve Compression Type, 90 Degree
SAE AS 4891 : 1999 STUD, LOCKED IN, KEY LOCKED, UNS S66286, CLASSIFICATION: 140 KSI PROCUREMENT SPECIFICATION FOR
MIL B 45912 : A BOLT, SELF-LOCKING, HEXAGON HEAD, STEEL
MIL-G-25507 Revision B:1991 Gage, Pressure, Dial Indication, Oxygen 0-2000 PSI, Type MF-2
SAE AS5356B Coupling, Fuel Line, Flexible, 125 psi General Specification for
MIL E 17807 : C ELEVATOR, WEAPON AND CARGO, ELECTROMECHANICAL (SHIPBOARD)
MIL S 1222 : H STUD, BOLTS, HEX CAP SCREWS, SOCKET HEAD CAP SCREWS AND NUTS
MIL-DTL-24552 Revision B:2001 TERMINALS AND SEALS, PLUGS AND SWITCH, CASUALTY POWER SYSTEMS, RECEPTACLE TYPE, GENERAL SPECIFICATION FOR
MIL-T-14091 Revision E:1988 TRIPOD, SURVEYING, EXTENSION-LEG-TYPE
MIL-F-19700 Revision A:1987 FASTENERS, SCREW THREADED, AND RELATED ITEMS, NON-MAGNETIC
MIL-DTL-32408 Base Document:2012 INTEGRAL MOTOR PUMP (IMP)
MIL T 24552 : A TERMINALS AND PLUGS, CASUALTY POWER SYSTEMS, RECEPTACLE TYPE, GENERAL SPECIFICATION FOR
MIL-V-24272 Revision B:1985 Valve Manifold, High-Pressure Gas Reducing
MIL-DTL-24705 Revision B:2010 PENETRATORS, MULTIPLE CABLE, ELECTRIC CABLE, GENERAL SPECIFICATION FOR
MIL-R-52255 Revision D:1988 REPAIR KIT AND REPAIR KIT COMPONENTS, FOR COLLAPSIBLE FABRIC TANKS, DRUMS, AND BOATS
MIL F 1224 : D FITTINGS, TUBE, BRASS OR BRONZE, 45 DEGREE FLARED
MS9194 Revision C:2010 Elbow, Tube - SAE-AMS5646, Boss, 90 Degrees
MIL-DTL-38999 Revision M:2015 Connectors, Electrical, Circular, Miniature, High Density, Quick Disconnect (Bayonet, Threaded or Breech Coupling), Environment Resistant with Crimp Removable Contacts or Hermetically Sealed with Fixed, Solderable Contacts, General Specification for
MS39137 Revision H:2010 ADAPTER BODY, AUTOMOTIVE AIR BRAKE
MIL H 13719 : D HOSE ASSEMBLY, RUBBER, HYDRAULIC BRAKE
XP PREN 3545-005 : 1997 XP AEROSPACE SERIES - CONNECTORS, ELECTRICAL, RECTANGULAR, WITH SEALED AND NON-SEALED REAR, PLASTIC HOUSING, LOCKING DEVICE, OPERATING TEMPERATURES -55 DEGREE C TO 175 DEGREE C - PART 005: FEMALE CODING AND ATTACHMENT SYSTEM FOR MOUNTING ON FREE HOUSING (PLUG) - PRODUCT STANDARD
MIL-DTL-2726-5 Revision C:2005 RECEPTACLE, PLUG, ELECTRICAL, 3-PIN GROUNDED, 40 - AMPERE, 450 - VOLT, ALTERNATING CURRENT (SYMBOL NO. 1140.1)
PREN 3545-006 : 200P2 AEROSPACE SERIES - CONNECTORS, ELECTRICAL, RECTANGULAR, WITH SEALED AND NON-SEALED REAR, PLASTIC HOUSING, LOCKING DEVICE, OPERATING TEMPERATURES -55 DEGREES C TO 175 DEGREES C - PART 006: MALE CODING AND ATTACHMENT SYSTEM FOR MOUNTING ON FIXED HOUSING (RECEPTACLE) - PRODUCT STANDARD
NASM51959:2015 SCREW, MACHINE, FLAT COUNTERSUNK HEAD, 82 DEGREES, CRUCIFORM RECESS, CORROSION-RESISTANT STEEL, UNC-2A
MIL-V-24740 Base Document:1990 VALVE, SAFETY, BOILER, REMOTE PILOT OPERATED, FOR SHIPBOARD USE
MIL-E-24142 Revision B:1984 ENCLOSURE FOR ELECTRICAL FITTINGS AND FIXTURES, GENERAL SPECIFICATION FOR
NASA SSTD 8070 0098 : 2012 MACHINE SHOP TOLERANCES
NASM 35649 : 2002 NUT, PLAIN, HEXAGON, MACHINE SCREW UNC-2B
MIL-DTL-2726-55 Revision B:2005 Receptacle, Plug, Electrical, 4-Pin Grounded, 10-Ampere,, 450-Volt, 400-Hertz, 3-Phase (Symbol No.1260)
MIL-DTL-2726-2 Revision C:2006 Receptacle, Plug, Electrical, 3 - Pin Grounded, 50 - Ampere, 250 - Volt, Direct Current (Symbol No. 716.1)
MIL H 13531 : C HOSE, RUBBER AND HOSE ASSEMBLY, RUBBER (HYDRAULIC, FLEXIBLE)
MIL-DTL-8348 Revision K:2008 Gage Assemblies, Air Pressure, Dial Indicating Chuck Type, Self-Contained
MIL-S-8879 Revision C:1991 SCREW THREADS, CONTROLLED RADIUS ROOT WITH INCREASED MINOR DIAMETER, GENERAL SPECIFICATION FOR
SAE AS 4976 : 2012 Insert, Screw Thread, Non-Locking, UNS S66286, Locked in, Key Locked, Procurement Specification for(STABILIZED Mar 2019)
FF-N-845 Revision D:1981 NUT, PLAIN, WING, INCH AND METRIC
MS51531 Revision B:1985 NUT, TUBE COUPLING, 37 DEGREE FLARED
MIL-I-45914 Revision A:1991 INSERT, SCREW THREAD - LOCKED IN, KEY LOCKED
MIL-V-2961 Revision D:1990 VALVES, GLOBE, PRESSURE REDUCING, GAS SERVICE
FED-STD-H28-18 Revision B:1991 Screw-Thread Standards for Federal Services Section 18 Photographic Equipment Threads
DOD-M-24672 Base Document:1986 MOLDS, AND MOLD HEATING PLATEN FOR MOLDING ELECTRICAL CONNECTORS AND CABLES (METRIC)
DOD-B-15072 Revision E:1981 BATTERIES, STORAGE, LEAD-ACID, PORTABLE
MIL-DTL-2 Revision G:2006 VALVES, CYLINDER, GAS (FOR COMPRESSED OR LIQUEFIED GASES), GENERAL SPECIFICATION FOR
MS9195 Revision B:2010 ELBOW, TUBE - SAE-AMS5639, BOSS, 45 DEGREES
MS39021 Revision F:1991 SPEEDOMETER MECHANICAL (0-60MPH)
FED-STD-H28-6 Revision A:1978 SCREW-THREAD STANDARDS FOR FEDERAL SERVICES SECTION 6 GAGES AND GAGING FOR UNIFIED SCREW THREADS-UN AND UNR THREAD FORMS
A-A-55606 Revision A:2013 Anchor, Guy, and Rods, Anchor
MIL-G-15214 Revision E:1980 GAGE, DEPTH, WRIST, DIVER'S, SELF LUMINOUS DIAL
MIL-DTL-81722 Revision B:2017 VALVE, INFLATION, LIFE RAFT, FLU-6/P
FF-N-836 Revision E:1994 Nut: Square, Hexagon, Cap, Slotted, Castle, Knurled, Welding and Single Ball Seat
SAE AS45909A Stud, Locked In, Ring Locked, Serrated, General Specification For
MS24693 Revision K:1995 SCREW, MACHINE, FLAT COUNTERSUNK HEAD, 100 DEG, CROSS RECESSED, UNC-2A AND UNF-2A (IN./MM)
MIL-DTL-13791 Revision H:2015 DISTRIBUTOR, IGNITION SYSTEM: INTEGRAL COIL, WATERPROOF 24 VOLT
NASA PRC 9006 : 2007 PROCESS SPECIFICATION FOR THE INSTALLATION OF KEY-RETAINED SCREW THREAD INSERTS
MIL-DTL-45910 Revision D:2015 INSERT, SCREW THREAD-LOCKED IN AND RING LOCKED, SERRATED GENERAL SPECIFICATION FOR
MIL-HDBK-454 Revision B:2007 GENERAL GUIDELINES FOR ELECTRONIC EQUIPMENT
FF-S-210 Revision B:1981 SETSCREWS, SQUARE HEAD (INCH) AND SLOTTED HEADLESS (INCH AND METRIC)
MS9196 Revision C:2015 TEE, TUBE - SAE-AMS5646, BOSS
FED-STD-H28 Revision A:1994 Screw-Thread Standards for Federal Services
DOD-B-24541 Revision A:1982 BATTERY CELLS AND ELEMENTS, LEAD-ACID, MAIN STORAGE, SUBMARINE; GENERAL SPECIFICATION FOR (METRIC)
MIL-S-7742 Revision D:1991 SCREW THREADS, STANDARD, OPTIMUM SELECTED SERIES, GENERAL SPECIFICATION FOR
MIL-C-24224 Revision B:1985 Cartridge, Gas Pressure, for Pressurizing Dry Chemical Fire Extinguishers
13/30285934 DC : 0 BS EN 3545-005 - AEROSPACE SERIES - CONNECTORS, ELECTRICAL, RECTANGULAR, WITH SEALED AND NON-SEALED REAR, PLASTIC HOUSING, LOCKING DEVICE, OPERATING TEMPERATURES -55 DEGREES C TO 175 DEGREES C - PART 005: MALE CODING AND ATTACHMENT SYSTEM FOR MOUNTING ON FREE HOUSING (PLUG) - PRODUCT STANDARD
MIL-DTL-24558 Revision B:2011 TERMINAL BOXES, CONNECTION, FOR ELECTRICAL AND ELECTRONIC SYSTEMS, GENERAL SPECIFICATION FOR
MIL S 007742 : C SCREW THREADS, STANDARD, OPTIMUM SELECTED SERIES: GENERAL SPECIFICATION FOR
XP PREN 3545-006 : 1997 XP AEROSPACE SERIES - CONNECTORS, ELECTRICAL, RECTANGULAR, WITH SEALED AND NON-SEALED REAR, PLASTIC HOUSING, LOCKING DEVICE, OPERATING TEMPERATURES -55 DEGREE C TO 175 DEGREE C - PART 006: MALE CODING AND ATTACHMENT SYSTEM FOR MOUNTING ON FIXED HOUSING (RECEPTACLE) - PRODUCT STANDARD
MIL M 2082 : C METERS, FLOW, MECHANICAL, VOLUMETRIC POSITIVE DISPLACEMENT, LIQUID, COLD WATER AND HOT WATER TYPE, NAVAL SHIPBOARD USE
MIL-P-45377 Revision A:1980 POWER SUPPLY. HIGH VOLTAGE, 24 VOLT DIRECT CURRENT
FED-STD-H28-17 Revision A:1985 Screw-Thread Standards for Federal Services Section 17 Surveying Instrument Mounting Threads
MIL-DTL-9415 Revision B:2007 DYNAMIC LOUDSPEAKER LS-184A/AIC-10
MIL-DTL-2726-3 Revision E:2016 RECEPTACLE, PLUG, ELECTRICAL, 4-PIN GROUNDED, 40-AMPERE, 450-VOLT, ALTERNATING CURRENT, 60-HERTZ (SYMBOL NO. 717.1)
MIL-DTL-17840 Revision D:2018 Pump, Centrifugal, Close-Coupled, Navy Standard (for Surface Ships Application)
MIL-DTL-2036 Revision E:2014 ENCLOSURES FOR ELECTRIC AND ELECTRONIC EQUIPMENT, NAVAL SHIPBOARD
NASM35308:2015 SCREW, CAP, HEXAGON HEAD (FINISHED HEXAGON BOLT), STEEL, CORROSION RESISTING, PASSIVATED, UNF-2A
BS EN 3545-006:2015 Aerospace series. Connectors, electrical, rectangular, with sealed and non-sealed rear, plastic housing, locking device, operating temperatures -55°C to 175°C Male coding and attachment. System for mounting on fixed housing (receptacle). Product standard
FF-S-1362 Revision A:2014 STUD, PLAIN, GENERAL PURPOSE
EN 3545-006:2015 Aerospace series - Connectors, electrical, rectangular, with sealed and non-sealed rear, plastic housing, locking device, operating temperatures -55 °C to 175 °C - Part 006: Male coding and attachment System for mounting on fixed housing (receptacle) - Product standard
MIL-DTL-18240 Revision F:1997 FASTENER ELEMENT, SELF-LOCKING, THREADED FASTENER, 250 DEGREES F MAXIMUM
MIL H 13444 : E HOSE & HOSE ASSEMBLIES, RUBBER: FUEL AND OIL
SAE AS4892A Insert, Screw Thread, Self-Locking, UNS S66286, Locked In, Key Locked Procurement Specification For
MIL-B-18558 Revision B:1988 Bearing, Propulsion Line Shaft, Oil Disc Lubricated
NASM51958:2014 SCREW, MACHINE, PAN HEAD, CRUCIFORM RECESS, CORROSION RESISTING STEEL, UNF-2A
MIL-C-24368 Revision B:1987 CONNECTOR ASSEMBLIES, PLUGS AND RECEPTACLES, ELECTRIC POWER TRANSFER, SHORE TO SHIP AND SHIP TO SHIP, GENERAL SPECIFICATION FOR
MIL P 62071 : B POWER SUPPLY, HIGH VOLTAGE, SOLID STATE, 24 VOLTS, DIRECT CURRENT
MIL-E-24715 Base Document:1989 EXTINGUISHERS, FIRE. VAPORIZING LIQUID (BROMOCHLORODIFLUOROMETHANE, HALON 1211)
MIL-DTL-2726-53 Revision B:2005 Receptacle, Plug, Electrical, 4-Pin Grounded, 10-Ampere, 450-Volt, 60-Hertz, 3-Phase (Symbol No. 1258)
MIL-A-55059 Revision D:1988 ADAPTER, BATTERY TERMINAL
MIL-C-11071 Revision D:1983 CLEANING MACHINE, FUEL CAN, DRUM
MIL F 10884 : G FASTENERS, SNAP
WW-T-696 Revision E:1984 TRAPS, STEAM
MIL-R-24169 Revision B:1982 REGULATOR, AIR DEMAND, SINGLE HOSE, DIVER 5
MIL-S-70335 Revision A:1990 SCREW THREADS, INTERNAL COLD FORMED, GENERAL SPECIFICATION FOR
MIL P 24705 : A PENETRATORS, MULTIPLE CABLE, FOR ELECTRICAL CABLES, GENERAL SPECIFICATION FOR
MIL T 24558 : 0 TERMINAL BOXES, CONNECTION, FOR ELECTRICAL AND ELECTRONIC SYSTEMS, GENERAL SPECIFICATION FOR
ASME B40.200:2008(R2013) Thermometers, Direct Reading and Remote Reading <br>
ASME Y14.6:2001 SCREW THREAD REPRESENTATION
ASME Y14.6 : 2001 : R2013 SCREW THREAD REPRESENTATION
ASME Y14.6 : 2001 : R2007 SCREW THREAD REPRESENTATION
ASME B40.200 : 2008 THERMOMETERS, DIRECT READING AND REMOTE READING

FED-STD-H28-1 Revision A:1985 SCREW THREAD STANDARDS FOR FEDERAL SERVICES, SECTION 1, NOMENCLATURE, DEFINITIONS AND LETTER SYMBOLS FOR SCREW THREADS
ASME B46.1 : 2009 SURFACE TEXTURE (SURFACE ROUGHNESS, WAVINESS, AND LAY)
FED-STD-H28-20 Revision B:1994 SCREW THREAD STANDARDS FOR FEDERAL SERVICES, SECTION 20, INSPECTION METHODS FOR ACCEPTABILITY OF UN, UNR, UNJ, M, AND MJ SCREW THREADS
FED-STD-H28-6 Revision A:1978 SCREW-THREAD STANDARDS FOR FEDERAL SERVICES SECTION 6 GAGES AND GAGING FOR UNIFIED SCREW THREADS-UN AND UNR THREAD FORMS

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