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National Stock Number:
5305-01-128-5120
Federal Supply Class:
5305
National Item Identification Number:
011285120
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:
| 10115169 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | HT4048-5D-13 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4048-5D-13 | 17446 | HUCK INTERNATIONAL, INC | | HT4048-5D-13 | 56878 | SPS TECHNOLOGIES, LLC | | HT4048-5D-13 | 73197 | HI-SHEAR CORPORATION | | HT4048-5D-13 | 80539 | SPS TECHNOLOGIES, LLC | | ST3M713-5D13 | 56878 | SPS TECHNOLOGIES, LLC | | ST3M713-5D13 | 76301 | THE BOEING COMPANY | | ST3M713-5D13 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4048-5D-13 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4048-5D-13 | 97928 | HUCK INTL INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.049 INCHES MINIMUM AND 1.089 INCHES MAXIMUM FIRST HOLE | | FASTENER LENGTH | 1.172 INCHES MINIMUM AND 1.202 INCHES MAXIMUM | | GRIP LENGTH | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | HEAD DIAMETER | 0.429 INCHES MINIMUM AND 0.477 INCHES MAXIMUM | | HEAD STYLE | FLAT 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 | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE | | SURFACE TREATMENT | PASSIVATE 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 | 24 |
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