NSN 5305-00-842-1640

Part Details | CLOSE TOLERANCE SCREW

5305-00-842-1640 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: CA273059, CA2730-5-9, AS104059, AS104-05-9, CC0003559, CC00035-5-9, 5305-00-842-1640, 00-842-1640, 5305008421640, 008421640

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53DEC 23, 196600-842-164029294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

CROWNED HEXAGON

HEXAGON

Cross Reference | NSN 5305-00-842-1640
Part Number Cage Code Manufacturer
CA2730-5-929372ARCONIC GLOBAL FASTENERS & RINGS,INC.
AS104-05-984256AVIBANK MFG., INC.
CC00035-5-981755LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN AERONAUTICS
Technical Data | NSN 5305-00-842-1640
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.312 INCHES NOMINAL
FASTENER LENGTH1.082 INCHES NOMINAL
HEAD STYLE9 CROWNED HEXAGON
HEAD DIAMETER0.4362 INCHES MINIMUM AND 0.4367 INCHES MAXIMUM
HEAD HEIGHT0.253 INCHES MINIMUM AND 0.273 INCHES MAXIMUM
INTERNAL DRIVE STYLE HEXAGON
WIDTH ACROSS FLATS0.2187 INCHES MINIMUM AND 0.2212 INCHES MAXIMUM
GRIP LENGTH0.562 INCHES MINIMUM AND 0.582 INCHES MAXIMUM
GRIP DIAMETER0.3112 INCHES MINIMUM AND 0.3117 INCHES MAXIMUM
SPECIAL FEATURESRETAINING ELEMENTS IN SHANK