NSN 5305-00-450-7449

Part Details | CLOSE TOLERANCE SCREW

5305-00-450-7449 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.

Alternate Parts: HT4M3D, HT4M-3D, HT1029A4T3, HT1029A4T3, HT1029A4T3, 3M1234D3, 3M123-4D3, 3M1234, 3M123-4, HT4N3D, HT4N-3D, HT4M3D, HT4M-3D, HT12343D, HT123-4-3D, HT12343D, HT123-4-3D, E1284D3P, HT4N3D, HT4N-3D, 542914D3, 54291-4D3, 542914D3, 54291-4D3, 542914D3, 54291-4D3, 5305-00-450-7449, 00-450-7449, 5305004507449, 004507449

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53DEC 29, 196900-450-744929294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-00-450-7449
Part Number Cage Code Manufacturer
HT4M-3DC4293ALCOA FASTENING SYSTEMSFAIRCHILDFASTENERS EUROPE - VSD GMBH
HT1029A4T3C4293ALCOA FASTENING SYSTEMSFAIRCHILDFASTENERS EUROPE - VSD GMBH
HT1029A4T392215ARCONIC GLOBAL FASTENERS & RINGS,INC.
HT1029A4T306950ARCONIC GLOBAL FASTENERS & RINGS,INC.
3M123-4D376301BOEING COMPANY, THEDBA BOEING
3M123-418355BOEING COMPANY, THEDBA BOEING
HT4N-3D73197HI-SHEAR CORPORATION
HT4M-3D73197HI-SHEAR CORPORATION
HT123-4-3D17446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
HT123-4-3D97928HUCK INTL INC
E1284D3P97928HUCK INTL INC
HT4N-3DL4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
54291-4D30PTK6SPS TECHNOLOGIES INC
54291-4D356878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
54291-4D380539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
Technical Data | NSN 5305-00-450-7449
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.442 INCHES MINIMUM AND 0.509 INCHES MAXIMUM
FASTENER LENGTH0.640 INCHES MINIMUM AND 0.687 INCHES MAXIMUM
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.502 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM
GRIP DIAMETER0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM