5305-01-113-9790, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-113-9790

Federal Supply Class:
5305

National Item Identification Number:
011139790

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:

NA0038-050006

80205

NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE

Techincal Specification:

COUNTERSINK ANGLE	99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM
FASTENER LENGTH	14.70 MILLIMETERS MINIMUM AND 15.30 MILLIMETERS MAXIMUM
GRIP DIAMETER	4.9650 MILLIMETERS MINIMUM AND 4.9900 MILLIMETERS MAXIMUM
GRIP LENGTH	5.80 MILLIMETERS MINIMUM AND 6.20 MILLIMETERS MAXIMUM
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	9.0 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP E4340 OR STEEL COMP 8740 OVERALL
NOMINAL THREAD DIAMETER	5.0 MILLIMETERS
SPECIFICATION/STANDARD DATA	80205-NA0038 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE FINISH	0.8 MICROMETERS BEARING SURFACE OF HEAD
SURFACE FINISH	0.8 MICROMETERS GRIP
SURFACE FINISH	0.8 MICROMETERS THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	8.5 MILLIMETERS MINIMUM AND 9.5 MILLIMETERS MAXIMUM
THREAD PITCH IN MILLIMETERS	0.8
THREAD SERIES DESIGNATOR	MJ

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