NSN 5305-00-721-3132

Part Details | CLOSE TOLERANCE SCREW

5305-00-721-3132 A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

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Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JAN 01, 196300-721-313229294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

CROSS RECESS TYPE 1

Cross Reference | NSN 5305-00-721-3132
Part Number Cage Code Manufacturer
NAS1204-14D08938AIR INDUSTRIES CO INC
NAS1204-14D50568APCOM INC
NAS1204-14D71563COLLINS ENGINEERING CORP
NAS1204-14D82172DURHAM AIRCRAFT SERVICE INC
NAS1204-14D30889ERIKS SOUTHWEST INCDBA MONTCLAIR ENTERPRISES
NAS1204-14D30902F AND C SALES INC
NAS1204-14D73197HI-SHEAR CORPORATION
NAS1204-14D04348LAWRENCE ENGINEERING AND SUPPLY INC
NAS1204-14DL4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
NAS49880205NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES
NAS1204-14D80205NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES
NAS1204-14D07851NOR-CAL SUPPLY CO.INC.
NAS1204-14D56878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
NAS1204-14D80539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
Technical Data | NSN 5305-00-721-3132
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.291 INCHES MINIMUM AND 0.341 INCHES MAXIMUM
FASTENER LENGTH1.176 INCHES MINIMUM AND 1.206 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.449 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE CROSS RECESS TYPE 1
GRIP LENGTH0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM
GRIP DIAMETER0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
SPECIFICATION/STANDARD DATA80205-NAS1204 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD