5305-00-680-6047, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-00-680-6047

Federal Supply Class:
5305

National Item Identification Number:
006806047

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:

S2329078-46	04348	LAWRENCE ENGINEERING AND SUPPLY INC
S2329078-46	18355	THE BOEING COMPANY
S2329078-46	88277	THE BOEING COMPANY

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	4.302 INCHES MINIMUM AND 4.322 INCHES MAXIMUM FIRST HOLE
COUNTERSINK ANGLE	100.0 DEGREES NOMINAL
FASTENER LENGTH	4.500 INCHES MINIMUM AND 4.547 INCHES MAXIMUM
GRIP DIAMETER	0.4986 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM
GRIP LENGTH	4.052 INCHES MINIMUM AND 4.072 INCHES MAXIMUM
HEAD DIAMETER	1.007 INCHES MINIMUM AND 1.017 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 5TH MATERIAL RESPONSE OR AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4037 OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.500 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.106 INCHES NOMINAL FIRST HOLE
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNF
WIDTH ACROSS FLATS	0.376 INCHES MINIMUM AND 0.379 INCHES MAXIMUM
SURFACE FINISH	20.0 MICROINCHES GRIP
SURFACE TREATMENT	CADMIUM HEAD
SURFACE TREATMENT	CADMIUM THREADS
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.428 INCHES MINIMUM AND 0.495 INCHES MAXIMUM

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