NSN 5305-00-004-2991

Part Details | CLOSE TOLERANCE SCREW

5305-00-004-2991 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: 7503854, 750385-4, 5305-00-004-2991, 00-004-2991, 5305000042991, 000042991

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JUN 07, 197200-004-299129294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

CROSS RECESS TYPE 1

Cross Reference | NSN 5305-00-004-2991
Part Number Cage Code Manufacturer
750385-480249BAE SYSTEMS INFORMATION ANDELECTRONIC SYSTEMS INTEGRATION INC.
Technical Data | NSN 5305-00-004-2991
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.138 INCHES
THREAD QUANTITY PER INCH32
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.300 INCHES MINIMUM
FASTENER LENGTH0.500 INCHES NOMINAL
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.259 INCHES MINIMUM AND 0.279 INCHES MAXIMUM
COUNTERSINK ANGLE100.0 DEGREES MINIMUM
INTERNAL DRIVE STYLE CROSS RECESS TYPE 1
GRIP LENGTH0.200 INCHES NOMINAL
GRIP DIAMETER0.1375 INCHES MINIMUM AND 0.1385 INCHES MAXIMUM