5305-00-514-7569, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-00-514-7569

Federal Supply Class:
5305

National Item Identification Number:
005147569

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:

HT8167-6-7	80539	SPS TECHNOLOGIES, LLC
HT8167-6-7	92215	HOWMET GLOBAL FASTENING SYSTEMS INC

Techincal Specification:

COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH	0.814 INCHES MINIMUM AND 0.844 INCHES MAXIMUM
GRIP LENGTH	0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
GRIP DIAMETER	0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM
HARDNESS RATING	46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.510 INCHES MINIMUM AND 0.564 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	HIGH-TORQUE
MATERIAL DOCUMENT AND CLASSIFICATION	AMS6485 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP H11 OVERALL
MINIMUM TENSILE STRENGTH	132000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.375 INCHES
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH	32.0 MICROINCHES GRIP
SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	NAS672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.366 INCHES MINIMUM AND 0.416 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH	24

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