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National Stock Number:
5305-01-194-7060
Federal Supply Class:
5305
National Item Identification Number:
011947060
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:
| 3M938-4-5-6 | 56878 | SPS TECHNOLOGIES, LLC | | 3M938-4-5-6 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | HT4072-4-5-6 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | 3M938-4-5-6 | 60516 | WEST COAST AEROSPACE, INC. | | 3M938-4-5-6 | 76301 | THE BOEING COMPANY | | 3M938-4-5-6 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | HT4072-4-5-6 | 17446 | HUCK INTERNATIONAL, INC | | HT4072-4-5-6 | 56878 | SPS TECHNOLOGIES, LLC | | HT4072-4-5-6 | 73197 | HI-SHEAR CORPORATION | | HT4072-4-5-6 | 80539 | SPS TECHNOLOGIES, LLC | | HT4072-4-5-6 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4072-4-5-6 | 97928 | HUCK INTL INC | | HT4072-4-5-6 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | HT4072-4-5-6 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | WC4072-4-5-6 | 60516 | WEST COAST AEROSPACE, INC. |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 0.672 INCHES MINIMUM AND 0.702 INCHES MAXIMUM | | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM | | GRIP LENGTH | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM | | HEAD DIAMETER | 0.3898 INCHES MINIMUM AND 0.3948 INCHES MAXIMUM | | HEAD HEIGHT | 0.015 INCHES MAXIMUM | | HEAD STYLE | FILLISTER COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | 23-112,TY D,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-83488,TY 2,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM AND CHROMATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.350 INCHES MINIMUM AND 0.400 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 28 |
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