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National Stock Number:
5305-01-110-1898
Federal Supply Class:
5305
National Item Identification Number:
011101898
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:
| 3M938-6D6-7 | 56878 | SPS TECHNOLOGIES, LLC | | 3M938-6D6-7 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | HT4072-6D6-7 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4072-6D6-7 | 17446 | HUCK INTERNATIONAL, INC | | 3M938-6D6-7 | 60551 | TRANTER MFG CO | | 3M938-6D6-7 | 76301 | THE BOEING COMPANY | | HT4072-6D6-7 | 56878 | SPS TECHNOLOGIES, LLC | | HT4072-6D6-7 | 73197 | HI-SHEAR CORPORATION | | HT4072-6D6-7 | 80539 | SPS TECHNOLOGIES, LLC | | HT4072-6D6-7 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4072-6D6-7 | 97928 | HUCK INTL INC | | HT4072-6D6-7 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.438 INCHES NOMINAL | | FASTENER LENGTH | 0.798 INCHES MINIMUM AND | | 0.828 INCHES MAXIMUM | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | 23M112 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-83488 TYPE 2 CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 0.564 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | GRIP LENGTH | 0.365 INCHES MINIMUM AND | | 0.385 INCHES MAXIMUM | | GRIP DIAMETER | 0.3735 INCHES MINIMUM AND | | 0.3745 INCHES MAXIMUM | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.673 INCHES MINIMUM AND | | 0.713 INCHES MAXIMUM FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND | | 0.111 INCHES MAXIMUM FIRST HOLE |
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