5305-01-338-6795, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-338-6795

Federal Supply Class:
5305

National Item Identification Number:
013386795

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:

5305PL0788135	9009H	INSPEKTORAT WSPARCIA SIL ZBROJNYCH
MS3369B307	36213	STANDARD AERO LIMITED
MS3369B307	63005	ROLLS-ROYCE CORPORATION
MS3369B307	78022	NORTHROP GRUMMAN SYSTEMS CORPORATION
MS3369B307	84256	AVIBANK MFG., INC.
MS3369B307	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

THREAD SERIES DESIGNATOR	UNJF
NOMINAL THREAD DIAMETER	0.190 INCHES
THREAD QUANTITY PER INCH	32
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.262 INCHES MINIMUM AND
	0.313 INCHES MAXIMUM
FASTENER LENGTH	0.810 INCHES MINIMUM AND
	0.830 INCHES MAXIMUM
MATERIAL	STEEL COMP XM-13 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MINIMUM TENSILE STRENGTH	63000 POUNDS PER SQUARE INCH
HEAD STYLE	CROWNED HEXAGON
HEAD HEIGHT	0.096 INCHES MINIMUM AND
	0.110 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.413 INCHES MINIMUM
INTERNAL DRIVE STYLE	SLOT
GRIP LENGTH	0.438 INCHES MINIMUM AND
	0.454 INCHES MAXIMUM
GRIP DIAMETER	0.1889 INCHES MINIMUM AND
	0.1894 INCHES MAXIMUM
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
	32.0 MICROINCHES GRIP
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	0.731 INCHES NOMINAL FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.070 INCHES MINIMUM AND
	0.080 INCHES MAXIMUM FIRST HOLE
SPECIAL FEATURES	RETAINING ELEMENT IN SHANK
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS3369B307

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