NSN 5305-00-279-9073

Part Details | CLOSE TOLERANCE SCREW

5305-00-279-9073 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: HT5A12, HT5E12, HT5A12, HT5A12, 5305-00-279-9073, 00-279-9073, 5305002799073, 002799073

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53AUG 15, 197300-279-907329294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-00-279-9073
Part Number Cage Code Manufacturer
HT5A12C4293ALCOA FASTENING SYSTEMSFAIRCHILDFASTENERS EUROPE - VSD GMBH
HT5E1273197HI-SHEAR CORPORATION
HT5A1273197HI-SHEAR CORPORATION
HT5A12L4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
Technical Data | NSN 5305-00-279-9073
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM
FASTENER LENGTH1.265 INCHES MINIMUM AND 1.312 INCHES MAXIMUM
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.629 INCHES MINIMUM AND 0.634 INCHES MAXIMUM
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM
GRIP DIAMETER0.3112 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM