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National Stock Number:
5305-01-034-6626
Federal Supply Class:
5305
National Item Identification Number:
010346626
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:
| 11929-7D15 | 59563 | REID PRODUCTS INC. | | AT4048-7D-15 | 17446 | HUCK INTERNATIONAL, INC | | AT4048-7D-15 | 97928 | HUCK INTL INC | | HT4048-7D-15 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4048-7D-15 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | HT4048-7D-15 | 56878 | SPS TECHNOLOGIES, LLC | | HT4048-7D-15 | 73197 | HI-SHEAR CORPORATION | | HT4048-7D-15 | 80539 | SPS TECHNOLOGIES, LLC | | HT4048-7D-15 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4048-7D-15 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | ST3M713-7D15 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM FIRST HOLE | | COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 1.376 INCHES MINIMUM AND 1.406 INCHES MAXIMUM | | GRIP LENGTH | 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM | | GRIP DIAMETER | 0.4365 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM | | HEAD DIAMETER | 0.612 INCHES MINIMUM AND 0.672 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | 23-112,MCDONNEL DOUGLAS CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.438 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.428 INCHES MINIMUM AND 0.478 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNJF |
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