NSN 5305-00-448-4631

Part Details | CLOSE TOLERANCE SCREW

5305-00-448-4631 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: HT8115417X, HT8115-4-17X, ST3M559417, ST3M559-4-17, HT307417, HT307-4-17, HS26234Z17X, HS2623-4Z-17X, HS26234Z17X, HS2623-4Z-17X, HT307417, HT307-4-17, 66908H417, 66908H4-17, 66908H417, 66908H4-17, 5305-00-448-4631, 00-448-4631, 5305004484631, 004484631

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JAN 13, 197100-448-463129294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-00-448-4631
Part Number Cage Code Manufacturer
HT8115-4-17X92215ARCONIC GLOBAL FASTENERS & RINGS,INC.
ST3M559-4-1776301BOEING COMPANY, THEDBA BOEING
HT307-4-1773197HI-SHEAR CORPORATION
HS2623-4Z-17X17446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
HS2623-4Z-17X97928HUCK INTL INC
HT307-4-17L4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
66908H4-1756878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
66908H4-1780539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
Technical Data | NSN 5305-00-448-4631
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
FASTENER LENGTH1.443 INCHES MINIMUM AND 1.490 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH220000 POUNDS PER SQUARE INCH
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM
GRIP DIAMETER0.2641 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT