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National Stock Number:
5305-01-189-2056
Federal Supply Class:
5305
National Item Identification Number:
011892056
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:
| HT4048-4D13 | 17446 | HUCK INTERNATIONAL, INC | | HT4048-4D13 | 56878 | SPS TECHNOLOGIES, LLC | | HT4048-4D13 | 73197 | HI-SHEAR CORPORATION | | HT4048-4D13 | 80539 | SPS TECHNOLOGIES, LLC | | HT4048-4D13 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4048-4D13 | 97928 | HUCK INTL INC | | ST3M713-4D13-1 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M713-4D13-1 | 0PTK6 | SPS TECHNOLOGIES INC | | ST3M713-4D13-1 | 17446 | HUCK INTERNATIONAL, INC | | ST3M713-4D13-1 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M713-4D13-1 | 60516 | WEST COAST AEROSPACE, INC. | | ST3M713-4D13-1 | 73197 | HI-SHEAR CORPORATION | | ST3M713-4D13-1 | 76301 | THE BOEING COMPANY | | ST3M713-4D13-1 | 80539 | SPS TECHNOLOGIES, LLC | | ST3M713-4D13-1 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION |
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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 | 0.990 INCHES MINIMUM AND 1.030 INCHES MAXIMUM FIRST HOLE | | FASTENER LENGTH | 1.113 INCHES MINIMUM AND 1.143 INCHES MAXIMUM | | GRIP LENGTH | 0.802 INCHES MINIMUM AND 0.822 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 | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP XM-13 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD LENGTH | 0.291 INCHES MINIMUM AND 0.341 INCHES MAXIMUM | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNJF |
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