NSN 5305-01-377-0946

Part Details | CLOSE TOLERANCE SCREW

5305-01-377-0946 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: C630424, C630-4-24, 64494424, 64494-4-24, 5305-01-377-0946, 01-377-0946, 5305013770946, 013770946

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JUL 02, 199301-377-094629294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

CROWNED HEXAGON

HEXAGON

Cross Reference | NSN 5305-01-377-0946
Part Number Cage Code Manufacturer
C630-4-2481755LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN AERONAUTICS
64494-4-2456878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
Technical Data | NSN 5305-01-377-0946
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.438 INCHES MINIMUM AND 0.458 INCHES MAXIMUM
FASTENER LENGTH1.938 INCHES MINIMUM AND 1.958 INCHES MAXIMUM
HEAD STYLE9 CROWNED HEXAGON
HEAD DIAMETER0.3737 INCHES MINIMUM AND 0.3742 INCHES MAXIMUM
HEAD HEIGHT0.263 INCHES NOMINAL
INTERNAL DRIVE STYLE HEXAGON
WIDTH ACROSS FLATS0.1875 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM
GRIP LENGTH1.500 INCHES MINIMUM AND 1.520 INCHES MAXIMUM
GRIP DIAMETER0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM