5305-01-586-1954, SCREW,CLOSE TOLERANCE

5305-01-586-1952 SCREW,CLOSE TOLERANCE

5305-01-586-1955 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-586-1954

Federal Supply Class:
5305

National Item Identification Number:
015861954

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:

NAS1124V28

80205

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

Techincal Specification:

FASTENER LENGTH	0.974 INCHES MINIMUM AND 1.018 INCHES MAXIMUM
GRIP LENGTH	0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
GRIP DIAMETER	0.1625 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM
HEAD DIAMETER	0.309 INCHES MINIMUM AND 0.331 INCHES MAXIMUM
HEAD HEIGHT	0.088 INCHES MINIMUM AND 0.102 INCHES MAXIMUM
HEAD STYLE	MODIFIED PAN
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	TITANIUM ALLOY UNS R56400 OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.164 INCHES
SPECIFICATION/STANDARD DATA	80205-NAS1124 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH	32.0 MICROINCHES GRIP
SURFACE FINISH	32.0 MICROINCHES THREADS
THREAD LENGTH	0.251 INCHES MINIMUM AND 0.301 INCHES MAXIMUM
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH	32

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