NSN 5305-01-287-0373

Part Details | CLOSE TOLERANCE SCREW

5305-01-287-0373 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: ST3M7335L3, ST3M733-5L3, HT405753A, HT4057-5-3A, HT405753A, HT4057-5-3A, ST3M7335L3, ST3M733-5L3, HT405753A, HT4057-5-3A, HT405753A, HT4057-5-3A, HT405753A, HT4057-5-3A, HT405753A, HT4057-5-3A, ST3M7335L3, ST3M733-5L3, HT405753A, HT4057-5-3A, 5305-01-287-0373, 01-287-0373, 5305012870373, 012870373

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53OCT 13, 198801-287-037329294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-01-287-0373
Part Number Cage Code Manufacturer
ST3M733-5L392215ARCONIC GLOBAL FASTENERS & RINGS,INC.
HT4057-5-3A92215ARCONIC GLOBAL FASTENERS & RINGS,INC.
HT4057-5-3A06950ARCONIC GLOBAL FASTENERS & RINGS,INC.
ST3M733-5L376301BOEING COMPANY, THEDBA BOEING
HT4057-5-3A73197HI-SHEAR CORPORATION
HT4057-5-3A17446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
HT4057-5-3A97928HUCK INTL INC
HT4057-5-3AL4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
ST3M733-5L3K5673SPS TECHNOLOGIES LTD TJ BROOKSDIVISION
HT4057-5-3A80539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
Technical Data | NSN 5305-01-287-0373
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.506 INCHES MINIMUM AND 0.556 INCHES MAXIMUM
FASTENER LENGTH0.704 INCHES MINIMUM AND 0.734 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.575 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM
GRIP DIAMETER0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM
FEATURES PROVIDED CETYL ALCOHOL LUBRICANT