5305-14-369-3508, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-14-369-3508

Federal Supply Class:
5305

National Item Identification Number:
143693508

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:

3939-60-18BEM	F6117	DASSAULT AVIATION
3939-60X18BEM	F6117	DASSAULT AVIATION
3939BE060018M	F6117	DASSAULT AVIATION

Techincal Specification:

TEST DATA DOCUMENT	F3025-AIR 9173 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	10.0 MILLIMETERS NOMINAL
THREAD SERIES DESIGNATOR	ISO M
THREAD PITCH IN MILLIMETERS	1.0
COUNTERSINK ANGLE	100.0 DEGREES NOMINAL
EXTERNAL THREAD TOLERANCE CLASS	3
FASTENER LENGTH	20.75 MILLIMETERS MINIMUM AND 21.25 MILLIMETERS MAXIMUM
HEAD DIAMETER	11.5 MILLIMETERS MINIMUM
HEAD HEIGHT	2.6 MILLIMETERS NOMINAL
HEAD STYLE	ERR-090
INTERNAL DRIVE STYLE	CROSS RECESS TYPE II
MATERIAL DOCUMENT AND CLASSIFICATION	F3025 AIR 9160C MIL STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 30NCD16 OVERALL
MINIMUM TENSILE STRENGTH	1080 MEGAPASCALS
MINIMUM YIELD STRENGTH	8800 MEGAPASCALS
NOMINAL THREAD DIAMETER	6.0 MILLIMETERS
SPECIAL FEATURES	DIAMETRE DE FOND DE GORGE 8.4MM MINI ET 8.5MM MAXI- BOUT PILOTE LONG 3MM
SURFACE FINISH	0.8 MICROMETERS BEARING SURFACE OF HEAD
SURFACE FINISH	0.8 MICROMETERS GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	NF L 09-753 CODE M NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE SIDES OF HEAD
SURFACE TREATMENT	CADMIUM AND CHROMATE THREADS
SURFACE TREATMENT	CADMIUM AND CHROMATE TOP OF HEAD
SURFACE TREATMENT	OIL BEARING SURFACE OF HEAD
SURFACE TREATMENT	OIL GRIP

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