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National Stock Number:
5305-01-049-9139
Federal Supply Class:
5305
National Item Identification Number:
010499139
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.
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Manufacturer Information:
| 11909V7L8M1 | 59563 | REID PRODUCTS INC. | | HT402 | 97928 | HUCK INTL INC | | HT4028L7-8M | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4028L7-8M | 56878 | SPS TECHNOLOGIES, LLC | | HT4028L7-8M | 73197 | HI-SHEAR CORPORATION | | HT4028L7-8M | 80539 | SPS TECHNOLOGIES, LLC | | ST3M466V7L8M1 | 17446 | HUCK INTERNATIONAL, INC | | ST3M466V7L8M1 | 76301 | THE BOEING COMPANY | | HT4028L7-8M | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4028L7-8M | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 1.141 INCHES MINIMUM AND 1.171 INCHES MAXIMUM | | GRIP LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM | | GRIP DIAMETER | 0.4365 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM | | HEAD DIAMETER | 0.662 INCHES MINIMUM AND 0.668 INCHES MAXIMUM | | HEAD STYLE | OVAL COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL | TITANIUM ALLOY OVERALL | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.438 INCHES | | SPECIAL FEATURES | DRY FILM LUBRICANT P.S. 18021 CL 1 | | SPECIFICATION/STANDARD DATA | 76301-ST3-466 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.631 INCHES MINIMUM AND 0.681 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 20 |
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