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National Stock Number:
5305-00-040-9438
Federal Supply Class:
5305
National Item Identification Number:
000409438
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:
| 106830-5D20 | 50392 | SPS TECHNOLOGIES INC | | 106830-5D20 | 56878 | SPS TECHNOLOGIES, LLC | | 11905-5D20 | 59563 | REID PRODUCTS INC. | | BM19019-5D20 | 17446 | HUCK INTERNATIONAL, INC | | BM19019-5D20 | 97928 | HUCK INTL INC | | HT295-5D20 | 73197 | HI-SHEAR CORPORATION | | HT4025L5D20 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4025L5D20 | 0PTK6 | SPS TECHNOLOGIES INC | | HT4025L5D20 | 17446 | HUCK INTERNATIONAL, INC | | HT4025L5D20 | 56878 | SPS TECHNOLOGIES, LLC | | HT4025L5D20 | 73197 | HI-SHEAR CORPORATION | | HT4025L5D20 | 80539 | SPS TECHNOLOGIES, LLC | | HT4025L5D20 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4025L5D20 | 97928 | HUCK INTL INC | | HT4025L5D20 | C4293 | ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH | | HT4025L5D20 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | HT4025L5D20 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | HT8140-5D20 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT8140-5D20 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M454-5D20 | 76301 | THE BOEING COMPANY | | ST3M454-5DL20 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.634 INCHES MAXIMUM FIRST HOLE | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.701 INCHES MINIMUM AND 1.748 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | GRIP LENGTH | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM | | HEAD DIAMETER | 0.625 INCHES MINIMUM AND 0.635 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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