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National Stock Number:
5305-01-156-5118
Federal Supply Class:
5305
National Item Identification Number:
011565118
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:
| HT4057-3-16 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4057-3-16 | 17446 | HUCK INTERNATIONAL, INC | | HT4057-3-16 | 73197 | HI-SHEAR CORPORATION | | HT4057-3-16 | 80539 | SPS TECHNOLOGIES, LLC | | HT4057-3-16 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4057-3-16 | 97928 | HUCK INTL INC | | ST3M733-6L16 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M733-6L16 | 0PTK6 | SPS TECHNOLOGIES INC | | ST3M733-6L16 | 17446 | HUCK INTERNATIONAL, INC | | ST3M733-6L16 | 56878 | SPS TECHNOLOGIES, LLC | | ST3M733-3-16 | 76301 | THE BOEING COMPANY | | ST3M733-3L16 | 76301 | THE BOEING COMPANY | | ST3M733-3L16 | 80539 | SPS TECHNOLOGIES, LLC | | HT4057-3-16 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | ST3M733-6L16 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M733-6L16 | 60516 | WEST COAST AEROSPACE, INC. | | ST3M733-6L16 | 73197 | HI-SHEAR CORPORATION | | ST3M733-6L16 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | ST3M733-6L16 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.391 INCHES MINIMUM AND 1.421 INCHES MAXIMUM | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM | | GRIP LENGTH | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM | | HEAD DIAMETER | 0.338 INCHES MINIMUM AND 0.381 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | 23-112 TYPE C FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-83488 TYPE2 CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM AND CHROMATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.381 INCHES MINIMUM AND 0.431 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNJF |
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