NSN 5305-00-153-7691

Part Details | CLOSE TOLERANCE SCREW

5305-00-153-7691 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: HT403A721, HT403A7-21, HT403A721, HT403A7-21, 3M47721, 3M47-7-21, 5305-00-153-7691, 00-153-7691, 5305001537691, 001537691

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JAN 19, 197300-153-769129294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-00-153-7691
Part Number Cage Code Manufacturer
HT403A7-21C4293ALCOA FASTENING SYSTEMSFAIRCHILDFASTENERS EUROPE - VSD GMBH
HT403A7-2192215ARCONIC GLOBAL FASTENERS & RINGS,INC.
3M47-7-2176301BOEING COMPANY, THEDBA BOEING
Technical Data | NSN 5305-00-153-7691
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.438 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.530 INCHES MINIMUM AND 0.697 INCHES MAXIMUM
FASTENER LENGTH1.952 INCHES MINIMUM AND 1.999 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
HEAD STYLE1 HEXAGON COUNTERSUNK
HEAD DIAMETER0.881 INCHES MINIMUM AND 0.888 INCHES MAXIMUM
HEAD HEIGHT0.130 INCHES MINIMUM AND 0.133 INCHES MAXIMUM
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM
GRIP DIAMETER0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM
SPECIAL FEATURESFURNISHED W/1 PREFORMED PACKING