5305-01-053-5802, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-053-5802

Federal Supply Class:
5305

National Item Identification Number:
010535802

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:

121558-5-4P	80539	SPS TECHNOLOGIES, LLC
AIC985-5D4	06725	SPS TECHNOLOGIES, LLC
AIC985-5D4P	06725	SPS TECHNOLOGIES, LLC
C7985-5D4	0K620	SEQUENCE SUPPORT SERVICES INC
C7985-5D4	17446	HUCK INTERNATIONAL, INC
C7985-5D4	81755	LOCKHEED MARTIN CORPORATION
PBF1166-5D4	27624	SPS TECHNOLOGIES LLC
VT1694F5-4D	92215	HOWMET GLOBAL FASTENING SYSTEMS INC

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	0.511 INCHES NOMINAL FIRST HOLE
COUNTERSINK ANGLE	100.0 DEGREES NOMINAL
FASTENER LENGTH	0.736 INCHES MINIMUM AND 0.786 INCHES MAXIMUM
GRIP LENGTH	0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
GRIP DIAMETER	0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM
HARDNESS RATING	46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.429 INCHES MINIMUM AND 0.479 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
MINIMUM TENSILE STRENGTH	220000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.312 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.076 INCHES MINIMUM AND 0.086 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	0.501 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH	24

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