5305-01-025-7762, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-025-7762

Federal Supply Class:
5305

National Item Identification Number:
010257762

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:

NAS1121-15H	04348	LAWRENCE ENGINEERING AND SUPPLY INC
NAS1121-15H	07851	NOR-CAL SUPPLY CO
NAS1121-15H	08938	AIR INDUSTRIES CO INC
NAS1121-15H	17446	HUCK INTERNATIONAL, INC
NAS1121-15H	30485	QUALIFIED AIR COMPONENTS INC.
NAS1121-15H	30902	F AND C SALES INC
NAS1121-15H	50568	APCOM INC
NAS1121-15H	53606	PLASTIC AND METAL PRODUCTS CORPORATION
NAS1121-15H	56878	SPS TECHNOLOGIES, LLC
NAS1121-15H	58998	FASTENER INNOVATION TECHNOLOGY, INC.
NAS1121-15H	73197	HI-SHEAR CORPORATION
NAS1121-15H	80205	NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
NAS1121-15H	80539	SPS TECHNOLOGIES, LLC
NAS1121-15H	92215	HOWMET GLOBAL FASTENING SYSTEMS INC
NAS1121-15H	97928	HUCK INTL INC
NAS1121-15H	L4528	LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC

Techincal Specification:

FASTENER LENGTH	1.199 INCHES MINIMUM AND 1.229 INCHES MAXIMUM
GRIP DIAMETER	0.1365 INCHES MINIMUM AND 0.1375 INCHES MAXIMUM
GRIP LENGTH	0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.221 INCHES MINIMUM AND 0.226 INCHES MAXIMUM
HEAD HEIGHT	0.074 INCHES MINIMUM AND 0.086 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
HOLE CONFIGURATION STYLE	ROUND
HOLE DIAMETER	0.038 INCHES NOMINAL
HOLE QUANTITY	2
HOLE TYPE	DRILLED
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
MATERIAL	STEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.138 INCHES
PART NAME ASSIGNED BY CONTROLLING AGENCY	NAVY SPECIAL PROJECT
SPECIFICATION/STANDARD DATA	80205-NAS1121 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH	32.0 MICROINCHES GRIP
SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD LENGTH	0.251 INCHES MINIMUM AND 0.301 INCHES MAXIMUM
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNJC

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