5305-01-590-5990, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-590-5990

Federal Supply Class:
5305

National Item Identification Number:
015905990

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:

NA0035-040010

80205

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

Techincal Specification:

EXTERNAL THREAD TOLERANCE CLASS	4H6H
FASTENER LENGTH	17.2 MILLIMETERS MINIMUM AND 17.8 MILLIMETERS MAXIMUM
GRIP DIAMETER	3.965 MILLIMETERS MINIMUM AND 3.990 MILLIMETERS MAXIMUM
GRIP LENGTH	9.8 MILLIMETERS MINIMUM AND 10.2 MILLIMETERS MAXIMUM
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	7.7 MILLIMETERS MINIMUM AND 8.0 MILLIMETERS MAXIMUM
HEAD HEIGHT	2.2 MILLIMETERS MINIMUM AND 2.4 MILLIMETERS MAXIMUM
HEAD STYLE	PAN NO. 2
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP E4340 OR STEEL COMP 8740 OVERALL
MINIMUM TENSILE STRENGTH	1100 MEGAPASCALS
NOMINAL THREAD DIAMETER	4.0 MILLIMETERS
PART NAME ASSIGNED BY CONTROLLING AGENCY	SCREW, CLOSE TOLERANCE PAN HEAD OFFSET CRUCIFORM RECESS ALLOY STEEL, 1100 MPA, METRIC
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	7.5 MILLIMETERS NOMINAL
THREAD SERIES DESIGNATOR	MJ
THREAD PITCH IN MILLIMETERS	0.7

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