5305-01-266-5357, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-266-5357

Federal Supply Class:
5305

National Item Identification Number:
012665357

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:

11907-4DL9-1	59563	REID PRODUCTS INC.
HT4024L-4D9	06950	HOWMET GLOBAL FASTENING SYSTEMS INC
HT4024L-4D9	17446	HUCK INTERNATIONAL, INC
HT4024L-4D9	73197	HI-SHEAR CORPORATION
HT4024L-4D9	80539	SPS TECHNOLOGIES, LLC
HT4024L-4D9	92215	HOWMET GLOBAL FASTENING SYSTEMS INC
HT4024L-4D9	97928	HUCK INTL INC
HT4024L-4D9	L4528	LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC
HT4024L-4DL9-1	73197	HI-SHEAR CORPORATION
HT4024L4D9	0PTK6	SPS TECHNOLOGIES INC
HT4024L4D9	K5673	SPS TECHNOLOGIES LTD TJ BROOKS DIVISION
ST3M455-4DL9	58998	FASTENER INNOVATION TECHNOLOGY, INC.
ST3M455-4DL9-1	76301	THE BOEING COMPANY
WC4024L4D9	60516	WEST COAST AEROSPACE, INC.

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	0.905 INCHES MINIMUM AND 0.926 INCHES MAXIMUM FIRST HOLE
COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH	1.016 INCHES MINIMUM AND 1.047 INCHES MAXIMUM
FEATURES PROVIDED	CETYL ALCOHOL LUBRICANT AND FINISHED HEAD
GRIP DIAMETER	0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
GRIP LENGTH	0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM
HEAD DIAMETER	0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	HIGH-TORQUE
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5629 UNS S13800 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP XM-13 OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE
SPECIFICATION/STANDARD DATA	76301-ST3-455 MANUFACTURERS STANDARD AND 73197-HT4024L MANUFACTURERS STANDARD
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	0.453 INCHES MINIMUM AND 0.484 INCHES MAXIMUM
THREAD QUANTITY PER INCH	28
THREAD SERIES DESIGNATOR	UNJF

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