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National Stock Number:
5305-01-140-4794
Federal Supply Class:
5305
National Item Identification Number:
011404794
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:
| 10115413 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | 11873-4D8-5 | 59563 | REID PRODUCTS INC. | | 3M707-4D8-5 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | 3M707-4D8-5 | 0PTK6 | SPS TECHNOLOGIES INC | | 3M707-4D8-5 | 17446 | HUCK INTERNATIONAL, INC | | 3M707-4D8-5 | 56878 | SPS TECHNOLOGIES, LLC | | HT4041-4D8-5 | 17446 | HUCK INTERNATIONAL, INC | | HT4041-4D8-5 | 56878 | SPS TECHNOLOGIES, LLC | | 3M707-4D8-5 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | 3M707-4D8-5 | 60516 | WEST COAST AEROSPACE, INC. | | 3M707-4D8-5 | 73197 | HI-SHEAR CORPORATION | | 3M707-4D8-5 | 76301 | THE BOEING COMPANY | | 3M707-4D8-5 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | 3M707-4D8-5 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | HT4041-4D8-5 | 73197 | HI-SHEAR CORPORATION | | HT4041-4D8-5 | 80539 | SPS TECHNOLOGIES, LLC | | HT4041-4D8-5 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4041-4D8-5 | 97928 | HUCK INTL INC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.676 INCHES MINIMUM AND 0.716 INCHES MAXIMUM FIRST HOLE | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM | | GRIP LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM | | GRIP DIAMETER | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM | | HEAD DIAMETER | 0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM | | HEAD STYLE | OVAL COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | 23-112 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD LENGTH | 0.287 INCHES MINIMUM AND 0.337 INCHES MAXIMUM | | THREAD DIRECTION | RIGHT-HAND | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 28 |
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