FED-STD-H28-20 Revision B:1994
Current
The latest, up-to-date edition.
SCREW THREAD STANDARDS FOR FEDERAL SERVICES, SECTION 20, INSPECTION METHODS FOR ACCEPTABILITY OF UN, UNR, UNJ, M, AND MJ SCREW THREADS
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1 Scope
2 Referenced documents
3 Definitions
4 General requirements
5 Detailed requirements
5.1 Inspection methods and their selection
5.1.1 Established systems
5.1.2 Selection
5.1.3 System 21
5.1.4 System 22
5.1.5 System 23
5.1.6 Small lot and nonstandard size part considerations
5.2 Acceptability
5.3 Special inspection considerations
5.4 In-process controls
5.5 Designation of inspection method
5.6 Referee gaging
5.7 Indicating gages and measuring instruments -
special requirements
5.8 Workmanship requirements for gages
5.9 Calibration and inspection of gages and measuring
instruments
Table
XX.1 Calibration requirements and standards, external
product thread gages
XX.2 Calibration requirements and standards, internal
product thread gages
XX.3 Calibration requirements, setting gages
Inspection methods for inch and metric module (UN, UNR, UNJ, M and MJ) screw threads. May also be referenced for Class 5 interference fit threads.
| Committee |
FSC THDS
|
| DevelopmentNote |
B Notice 1 - Notice of Change (02/2004)
|
| DocumentType |
Standard
|
| Pages |
30
|
| ProductNote |
NEW CHILD NOT 1 2019 NOW ADDED
|
| PublisherName |
US Military Specs/Standards/Handbooks
|
| Status |
Current
|
| DOD-I-63276 Revision A:1983 | INSERT, SCREW THREAD, LOCKED IN, RING LOCKED, SERRATED, METRIC AND RING LOCK SERRATED METRIC |
| SAE AS 4723 : 2012 | INSERT, SCREW THREAD, SELF-LOCKING, UNS S66286, KEY LOCKED, PLASTIC SELF LOCKING DEVICE, SOLID FILM LUBRICANT, PROCUREMENT SPECIFICATION FOR |
| MIL-DTL-10884 Revision H:2005 | FASTENERS, SNAP |
| NASM35308:2015 | SCREW, CAP, HEXAGON HEAD (FINISHED HEXAGON BOLT), STEEL, CORROSION RESISTING, PASSIVATED, UNF-2A |
| MIL-N-25027-1 Revision A:1995 | NUT, SELF-LOCKING, HEAVY HEX, (NON-METALLIC INSERT) 250 & 450 DEG F, UNJC-3B, 1/4 THROUGH 2-1/2 INCH NOMINAL DIAMETERS, NICKEL-COPPER ALLOY |
| FF-N-836 Revision E:1994 | Nut: Square, Hexagon, Cap, Slotted, Castle, Knurled, Welding and Single Ball Seat |
| MIL-DTL-45912 Revision B:2013 | BOLT, SELF-LOCKING, HEXAGON HEAD, STEEL |
| SAE AS 4976 : 2012 | Insert, Screw Thread, Non-Locking, UNS S66286, Locked in, Key Locked, Procurement Specification for(STABILIZED Mar 2019) |
| FED-STD-H28-22 Revision A:1987 | Screw-Thread Standards for Federal Services Section 22 Gages and Gaging for Metric Screw Threads-M and MJ Thread Forms |
| SAE AS 45909 : 2015 | STUD, LOCKED IN, RING LOCKED, SERRATED, GENERAL SPECIFICATION FOR |
| NASM 35206 : 2004 | SCREW, MACHINE, PAN HEAD, CRUCIFORM RECESS, CARBON STEEL, UNC-2A |
| 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 I 45910 : C | INSERT, SCREW THREAD LOCKED IN & RING LOCKED 1 SERRATED GENERAL SPECIFICATION FOR |
| MIL-S-63540 Revision C:1995 | STUD, SELF-CLINCHING GENERAL SPECIFICATION FOR |
| 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 45912 : A | BOLT, SELF-LOCKING, HEXAGON HEAD, STEEL |
| SAE AS 8879 : 2012 | SCREW THREADS - UNJ PROFILE, INCH CONTROLLED RADIUS ROOT WITH INCREASED MINOR DIAMETER |
| NASM51959:2015 | SCREW, MACHINE, FLAT COUNTERSUNK HEAD, 82 DEGREES, CRUCIFORM RECESS, CORROSION-RESISTANT STEEL, UNC-2A |
| FED-STD-H28-21 Revision B:1984 | Screw-Thread Standards for Federal Services Section 21 Metric Screw-Threads |
| DOD-I-63274 Revision A:1983 | Insert, Screw Thread-Thin Wall, Locked in, Metric, General Specification for |
| NASM 35649 : 2002 | NUT, PLAIN, HEXAGON, MACHINE SCREW UNC-2B |
| SAE AS 4892 : 2012 | INSERT, SCREW THREAD, SELF-LOCKING, UNS S66286, LOCKED IN, KEY LOCKED, PROCUREMENT SPECIFICATION FOR |
| MIL-S-8879 Revision C:1991 | SCREW THREADS, CONTROLLED RADIUS ROOT WITH INCREASED MINOR DIAMETER, GENERAL SPECIFICATION FOR |
| FED-STD-H28-2 Revision B:1991 | Screw-Thread Standards for Federal Services Section 2 Unified Inch Screw Threads- UN and UNR Thread Forms |
| DOD-N-70333 Base Document:1985 | NUT, PLAIN AND SELF-LOCKING, CLINCH, METRIC (SELF-CLINCHING, KNURLED COLLAR) FIXED AND FLOATING, GENERAL SPECIFICATION FOR |
| MIL-I-45914 Revision A:1991 | INSERT, SCREW THREAD - LOCKED IN, KEY LOCKED |
| FED-STD-H28-18 Revision B:1991 | Screw-Thread Standards for Federal Services Section 18 Photographic Equipment 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 |
| MS24693 Revision K:1995 | SCREW, MACHINE, FLAT COUNTERSUNK HEAD, 100 DEG, CROSS RECESSED, UNC-2A AND UNF-2A (IN./MM) |
| MIL-DTL-45910 Revision D:2015 | INSERT, SCREW THREAD-LOCKED IN AND RING LOCKED, SERRATED GENERAL SPECIFICATION FOR |
| FED-STD-H28 Revision A:1994 | Screw-Thread Standards for Federal Services |
| DOD-S-63275 Revision A:1982 | STUD, SCREW THREAD, LOCKED IN, RING LOCKED, SERRATED, METRIC AND RING LOCK SERRATED METRIC, GENERAL SPECIFICATION FOR |
| MIL-S-7742 Revision D:1991 | SCREW THREADS, STANDARD, OPTIMUM SELECTED SERIES, GENERAL SPECIFICATION FOR |
| SAE AS 4891 : 1999 | STUD, LOCKED IN, KEY LOCKED, UNS S66286, CLASSIFICATION: 140 KSI PROCUREMENT SPECIFICATION FOR |
| MIL S 007742 : C | SCREW THREADS, STANDARD, OPTIMUM SELECTED SERIES: GENERAL SPECIFICATION FOR |
| FED-STD-H28-17 Revision A:1985 | Screw-Thread Standards for Federal Services Section 17 Surveying Instrument Mounting Threads |
| FED-STD-H28-23 Base Document:1989 | Screw-Thread Standards for Federal Services Section 23 Class 5 Interference-Fit Screw Threads |
| SAE AS 5887 : 2014 | INSERT, SCREW THREAD, SELF-LOCKING, UNS S66286, LOCKED IN, KEY LOCKED PROCUREMENT SPECIFICATION FOR |
| MIL F 10884 : G | FASTENERS, SNAP |
| MIL-S-70335 Revision A:1990 | SCREW THREADS, INTERNAL COLD FORMED, GENERAL SPECIFICATION FOR |
| FED-STD-H28-1 Revision A:1985 | SCREW THREAD STANDARDS FOR FEDERAL SERVICES, SECTION 1, NOMENCLATURE, DEFINITIONS AND LETTER SYMBOLS FOR SCREW THREADS |
| FED-STD-H28-22 Revision A:1987 | Screw-Thread Standards for Federal Services Section 22 Gages and Gaging for Metric Screw Threads-M and MJ Thread Forms |
| GGG-C-105 Revision C:1987 | CALIPER, MICROMETER (INSIDE, OUTSIDE, TUBE) AND GAGE, DEPTH, MICROMETER |
| MIL-STD-120 Base Document:1950 | GAGE INSPECTION |
| 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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