5305-01-193-6854, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-193-6854

Federal Supply Class:
5305

National Item Identification Number:
011936854

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:

122966CD3-4	80539	SPS TECHNOLOGIES, LLC
GB511DU3C4D	26512	NORTHROP GRUMMAN SYSTEMS CORPORATION
PBF1355C3-4D	27624	SPS TECHNOLOGIES LLC
MATP111CD3-4	58845	ABOUNDING SECURITY INC DIV OF MAA CORP
HR217C3-4D	73197	HI-SHEAR CORPORATION
HR217C3-4D	L4528	LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC
SC2174C3-4D	06950	HOWMET GLOBAL FASTENING SYSTEMS INC

Techincal Specification:

THREAD SERIES DESIGNATOR	UNJF
NOMINAL THREAD DIAMETER	0.190 INCHES
THREAD QUANTITY PER INCH	32
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.338 INCHES MINIMUM AND
	0.388 INCHES MAXIMUM
FASTENER LENGTH	0.598 INCHES MINIMUM AND
	0.628 INCHES MAXIMUM
MATERIAL	IRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR
	AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OR
	AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
HEAD STYLE	PAN NO. 2
HEAD DIAMETER	0.360 INCHES MINIMUM AND
	0.374 INCHES MAXIMUM
HEAD HEIGHT	0.115 INCHES MINIMUM AND
	0.125 INCHES MAXIMUM
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
GRIP LENGTH	0.200 INCHES MINIMUM AND
	0.260 INCHES MAXIMUM
GRIP DIAMETER	0.1890 INCHES MINIMUM AND
	0.1895 INCHES MAXIMUM
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
	32.0 MICROINCHES GRIP
	32.0 MICROINCHES THREADS
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	0.492 INCHES MINIMUM AND
	0.502 INCHES MAXIMUM FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.070 INCHES MINIMUM AND
	0.080 INCHES MAXIMUM FIRST HOLE

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