• There are no items in your cart

FED-STD-H28-20 Revision B:1994

Current
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
Available format(s)

PDF

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

View more information
US$20.00
Excluding Tax where applicable

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.