5305-01-262-6737, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-262-6737

Federal Supply Class:
5305

National Item Identification Number:
012626737

Description:
SCREW,CLOSE TOLERANCE

Detail:
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.

Manufacturer Information:

NAS6403-21D

80205

NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	1.466 INCHES MINIMUM FIRST HOLE AND 1.476 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH	1.635 INCHES NOMINAL
GRIP DIAMETER	0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM
GRIP LENGTH	1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM
HEAD HEIGHT	0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM
HEAD STYLE	DISHED HEXAGON
NOMINAL THREAD DIAMETER	0.190 INCHES
INTERNAL DRIVE STYLE	W/O INTERNAL DRIVE
MATERIAL DOCUMENT AND CLASSIFICATION	AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	TITANIUM ALLOY UNS R56400 OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
SHANK UNTHREADED HOLE DIAMETER	0.070 INCHES MINIMUM FIRST HOLE AND 0.080 INCHES MAXIMUM FIRST HOLE
SINGLE SHEAR STRENGTH	95000 POUNDS PER SQUARE INCH
SPECIFICATION/STANDARD DATA	80205-NAS6403 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
WIDTH BETWEEN FLATS	0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TYP II,CLS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENT	CADMIUM OVERALL AND CHROMATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.323 INCHES NOMINAL
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNJF

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