NSN 5305-00-285-9229

Part Details | CLOSE TOLERANCE SCREW

5305-00-285-9229 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: HT813749AS, HT8137-4-9AS, ST3M430V49AS, ST3M430V4-9AS, ST3M430V49AS, ST3M430V4-9AS, HT271A49, HT271A4-9, BM33024V49U, BM33024V4-9U, HT271A49, HT271A4-9, 10125110, 11017949AS, 110179-4-9AS, 11017949AS, 110179-4-9AS, 11017949AS, 110179-4-9AS, ST3M430V49AS, ST3M430V4-9AS, WC813749A, WC8137-4-9A, 5305-00-285-9229, 00-285-9229, 5305002859229, 002859229

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53SEP 05, 197300-285-922929294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-00-285-9229
Part Number Cage Code Manufacturer
HT8137-4-9AS92215ARCONIC GLOBAL FASTENERS & RINGS,INC.
ST3M430V4-9AS76301BOEING COMPANY, THEDBA BOEING
ST3M430V4-9AS58998FASTENER INNOVATION TECHNOLOGY, INC.DBA F I T
HT271A4-973197HI-SHEAR CORPORATION
BM33024V4-9U97928HUCK INTL INC
HT271A4-9L4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
10125110A486GNIMIKKEISTOKESKUS NCB FINLAND
110179-4-9ASK5673SPS TECHNOLOGIES LTD TJ BROOKSDIVISION
110179-4-9AS56878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
110179-4-9AS80539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
ST3M430V4-9AS007R1TWIST TITE MFG, INC
WC8137-4-9A60516WEST COAST AEROSPACE INC
Technical Data | NSN 5305-00-285-9229
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
FASTENER LENGTH1.015 INCHES MINIMUM AND 1.062 INCHES MAXIMUM
HEAD STYLE1 HEXAGON COUNTERSUNK
HEAD DIAMETER0.502 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
HEAD HEIGHT0.071 INCHES MINIMUM AND 0.073 INCHES MAXIMUM
COUNTERSINK ANGLE99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM
GRIP DIAMETER0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
SPECIAL FEATURESFURNISHED WITH ONE O-RING SEAL