5305-00-441-9949, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-00-441-9949

Federal Supply Class:
5305

National Item Identification Number:
004419949

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:

106334-8-19D	56878	SPS TECHNOLOGIES, LLC
106334-8-19D	80539	SPS TECHNOLOGIES, LLC
A1C83-8A19	06725	SPS TECHNOLOGIES, LLC
AIC83-8A19	06725	SPS TECHNOLOGIES, LLC
BA45132-8A19	17446	HUCK INTERNATIONAL, INC
202-15522-8A19	80378	TRIUMPH AEROSTRUCTURES, LLC
VT1631-8-19T	92215	HOWMET GLOBAL FASTENING SYSTEMS INC
VT1631-8A19	92215	HOWMET GLOBAL FASTENING SYSTEMS INC
BA45132-8A19	97928	HUCK INTL INC

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	1.485 INCHES MINIMUM AND 1.564 INCHES MAXIMUM FIRST HOLE
COUNTERSINK ANGLE	99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM
FASTENER LENGTH	1.624 INCHES MINIMUM AND 1.671 INCHES MAXIMUM
GRIP DIAMETER	0.4985 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM
GRIP LENGTH	1.427 INCHES MINIMUM AND 1.447 INCHES MAXIMUM
HARDNESS RATING	46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.720 INCHES MINIMUM AND 0.754 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
MATERIAL DOCUMENT AND CLASSIFICATION	AMS6485 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP H11 OVERALL
MINIMUM TENSILE STRENGTH	220000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.500 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.097 INCHES MINIMUM AND 0.117 INCHES MAXIMUM FIRST HOLE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.427 INCHES MINIMUM AND 0.494 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH	20

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