5305-01-438-2365, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-438-2365

Federal Supply Class:
5305

National Item Identification Number:
014382365

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:

NA0038-030012

80205

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

Techincal Specification:

COUNTERSINK ANGLE	95.0 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM
EXTERNAL THREAD TOLERANCE CLASS	4H6H
FASTENER LENGTH	18.0 MILLIMETERS NOMINAL
GRIP DIAMETER	2.965 MILLIMETERS MINIMUM AND 2.990 MILLIMETERS MAXIMUM
GRIP LENGTH	12.0 MILLIMETERS NOMINAL
HEAD DIAMETER	5.4 MILLIMETERS MINIMUM AND 6.0 MILLIMETERS MAXIMUM
HEAD HEIGHT	1.27 MILLIMETERS NOMINAL
HEAD STYLE	FLAT COUNTERSUNK UNDERCUT
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
MATERIAL DOCUMENT AND CLASSIFICATION	NA0006 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	3.0 MILLIMETERS
SPECIFICATION/STANDARD DATA	80205-NA0038 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416, TY 2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CHROMATE AND CADMIUM OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	6.0 MILLIMETERS NOMINAL
THREAD SERIES DESIGNATOR	MJ
THREAD PITCH IN MILLIMETERS	0.5

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