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National Stock Number:
5305-01-126-2325
Federal Supply Class:
5305
National Item Identification Number:
011262325
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:
| 10115134 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | 11907-4DL14-1 | 59563 | REID PRODUCTS INC. | | HT4024L4D14 | 17446 | HUCK INTERNATIONAL, INC | | HT4024L4D14 | 73197 | HI-SHEAR CORPORATION | | HT4024L4D14 | 80539 | SPS TECHNOLOGIES, LLC | | HT4024L4D14 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M455-4DL14-1 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M455-4DL14-1 | 0PTK6 | SPS TECHNOLOGIES INC | | ST3M455-4DL14-1 | 27970 | PANAMETRICS LLC | | ST3M455-4DL14-1 | 76301 | THE BOEING COMPANY | | HT4024L4D14 | 97928 | HUCK INTL INC | | HT4024L4D14 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | HT4024L4D14 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.208 INCHES MINIMUM FIRST HOLE AND 1.248 INCHES MAXIMUM FIRST HOLE | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.329 INCHES MINIMUM AND 1.359 INCHES MAXIMUM | | GRIP DIAMETER | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM | | GRIP LENGTH | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM | | HEAD DIAMETER | 0.3898 INCHES MINIMUM AND 0.3948 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 OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM FIRST HOLE AND 0.081 INCHES MAXIMUM FIRST HOLE | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNJF |
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