5305-00-595-5986, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-00-595-5986

Federal Supply Class:
5305

National Item Identification Number:
005955986

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:

76121-4-5	56878	SPS TECHNOLOGIES, LLC
76121-4-5	80539	SPS TECHNOLOGIES, LLC
GB510DC4C5D	06950	HOWMET GLOBAL FASTENING SYSTEMS INC
GB510DC4C5D	26512	NORTHROP GRUMMAN SYSTEMS CORPORATION
GB510BF4-5	26512	NORTHROP GRUMMAN SYSTEMS CORPORATION
GB510DC4C5D	27624	SPS TECHNOLOGIES LLC
GB510DC4C5D	58845	ABOUNDING SECURITY INC DIV OF MAA CORP
GB510DC4C5D	73197	HI-SHEAR CORPORATION
NAS1581C4H5	80205	NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
GB510DC4C5D	80539	SPS TECHNOLOGIES, LLC
GB510DC4C5D	L4528	LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	0.590 INCHES MINIMUM AND 0.640 INCHES MAXIMUM FIRST HOLE
COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH	0.700 INCHES MINIMUM AND 0.730 INCHES MAXIMUM
GRIP LENGTH	0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM
GRIP DIAMETER	0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
HEAD DIAMETER	0.350 INCHES MINIMUM AND 0.399 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	HIGH-TORQUE
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5731 ASSN STD 1ST MATERIAL RESPONSE OR AMS5735 ASSN STD 2ND MATERIAL RESPONSE OR AMS5737 ASSN STD 3RD MATERIAL RESPONSE OVERALL
MATERIAL	IRON ALLOY 660 OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE
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-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.378 INCHES MINIMUM AND 0.428 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNJF
THREAD QUANTITY PER INCH	28

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