NSN 5305-00-763-4453

Part Details | CLOSE TOLERANCE SCREW

5305-00-763-4453 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: 51B581714, 51B581-7-14, 51B581714, 51B581-7-14, 5305-00-763-4453, 00-763-4453, 5305007634453, 007634453

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53APR 14, 197200-763-445329294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HEXAGON

Cross Reference | NSN 5305-00-763-4453
Part Number Cage Code Manufacturer
51B581-7-1476823NORTHROP GRUMMAN SYSTEMS CORPORATIONDIV NORTHROP GRUMMAN AEROSPACE
51B581-7-140JRC1NORTHROP GRUMMAN TECHNICAL SERVICES,INC.
Technical Data | NSN 5305-00-763-4453
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.438 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.453 INCHES MINIMUM
FASTENER LENGTH1.302 INCHES MINIMUM AND 1.367 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.662 INCHES MINIMUM AND 0.668 INCHES MAXIMUM
COUNTERSINK ANGLE99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM
INTERNAL DRIVE STYLE HEXAGON
WIDTH ACROSS FLATS0.375 INCHES NOMINAL
GRIP LENGTH0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM
GRIP DIAMETER0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM