NSN 5305-01-066-5311

Part Details | CLOSE TOLERANCE SCREW

5305-01-066-5311 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: HT307410, HT307-4-10, ST3M559410, ST3M559-4-10, HT307410, HT307-4-10, HS2623410, HS2623-4-10, HS2623410, HS2623-4-10, HT307410, HT307-4-10, HT307410, HT307-4-10, 66908H410, 66908H4-10, 5305-01-066-5311, 01-066-5311, 5305010665311, 010665311

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53OCT 13, 197801-066-531129294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-01-066-5311
Part Number Cage Code Manufacturer
HT307-4-10C4293ALCOA FASTENING SYSTEMSFAIRCHILDFASTENERS EUROPE - VSD GMBH
ST3M559-4-1076301BOEING COMPANY, THEDBA BOEING
HT307-4-1073197HI-SHEAR CORPORATION
HS2623-4-1017446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
HS2623-4-1097928HUCK INTL INC
HT307-4-10L4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
HT307-4-10R1120SATAIR A/S
66908H4-1080539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
Technical Data | NSN 5305-01-066-5311
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.397 INCHES NOMINAL
FASTENER LENGTH1.022 INCHES NOMINAL
MINIMUM TENSILE STRENGTH220000 POUNDS PER SQUARE INCH
SINGLE SHEAR STRENGTH132000 POUNDS PER SQUARE INCH
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH0.625 INCHES NOMINAL
GRIP DIAMETER0.2641 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM